Help me 6th grade science !:))

Help Me 6th Grade Science !:))

Answers

Answer 1

Answer:

I believe it is C.Shelter.

Answer 2

Answer:

C

Explanation:

The butterflies use the trees for shelter, because the trees protect them from the weather and the cold air.


Related Questions

When Mrs. Green describes the physical properties of matter she said that physical properties often concern changes in state, One
physical property that does not describe a change in state is
A)
density
B)
evaporation
C)
freezing
D)
melting

Answers

Answer:

density

Explanation:

Density is an important measurement. It has an unit: g/mL or kg/L, ...

Evaporation, freezing, melting are the processes in which the substances change their states. Other processes are: condensation, sublimation, deposition.

...

Hope this answer can help you. Have a nice day!

When you add a controlled amount of substance known as an impurity to a pure semiconductor, its conductivity increases. This process is known as doping. The addition of an impurity can increase or decrease the number of available electrons. If the number of electrons is increased, the extra electrons conduct electricity. If the number of electrons is decreased, a vacant hole is created. The adjacent electron enters the vacant hole and conducts electricity. Thus, it seems like the holes act as charge carriers. They are considered to be positive charge carriers. Depending upon the charge carriers that conduct electricity, there are two types of semiconductors: p-type semiconductors and n-type semiconductors.Which of the following statements are correct with respect to semiconductors?
a) The addition of group 3A elements to group 4A semiconductors decreases the conductivity of the group 4A semiconductors.
b) The conductivity of semiconductors can be increased by the doping process.
c) As the temperature increases, the conductivity of semiconductors decreases.
d) The addition of group 5A elements to group 4A semiconductors increases the conductivity of the group 4A semiconductors.
e) Holes are charge carriers in p-type semiconductors.
f) Electrons are charge carriers in n-type semiconductors.

Answers

Answer:

See explaination

Explanation:

1. The addition of group 3A elements to group 4A semiconductors decreases the conductivity of the group 4A semiconductors: Wrong

The addition of 3A group elements inreases the conductivity and make them extrinsic semiconductors( p-type)

2. The conductivity of semiconductors can be increased by the doping process.: Correct

3.As the temperature increases, the conductivity of semiconductors decreases.. wrong

As the temperature increases, the conductivity of semiconductors increases.

4. The addition of group 5A elements to group 4A semiconductors increases the conductivity of the group 4A semiconductors: Correct : They will create n-type semicoductor.

5.Holes are charge carriers in p-type semiconductors: Correct

6. Electrons are charge carriers in n-type semiconductors: Correct

Claims • Evidence • Reasoning Make
a claim about ways people can stay safe
during storms with high wind and heavy
rains. Summarize evidence to support the
claim and explain your reasoning.

Answers

Answer:

the claim is that when people avoid storms they hide in any secret place in there house

Explanation:

when people do that they don't even have to worry about a single thing that will happen to them

6.) (5 points) Assume you have a system with a fixed pH of 4.0. It is well buffered and therefore the pH will not change. What is the predominant state of a molecule with a dissociable proton with a pKa of 5.2 if it is introduced to that system (protonated or deprotonated)

Answers

Answer:

Dissociated state is the predominant one

Explanation:

When a molecule with pKa of 4.52 is in an aqueous solution at pH = 4.0, follows the H-H equation, thus:

pH = pKa + log₁₀ [A⁻] / [HA]

Where [A⁻] is the dissociated state and [HA] represents the protonated state

Replacing:

4.0 = 5.2 + log₁₀ [A⁻] / [HA]

-1.2 = log₁₀ [A⁻] / [HA]

0.063 =  [A⁻] / [HA]

[HA]  = 16 [A⁻]

That means you have 16 times more [HA] than [A⁻] and the dissociated state is the predominant one

Two liquids, A and B, have equal masses and equal initial temperatures. Each is heated for the same length of time over identical burners. Afterward, liquid A is hotter than liquid B. Which has the larger specific heat? Two liquids, A and B, have equal masses and equal initial temperatures. Each is heated for the same length of time over identical burners. Afterward, liquid A is hotter than liquid B. Which has the larger specific heat? Liquid A. There's not enough information to tell. Liquid B.

Answers

Answer:

Liquid A.

Explanation:

Specific heat is defined as the amount of heat required per unit of mass to raise the temperature by one degree celsius.

When two liquids are heated, the liquid with larger specific heat is the one which is hotter. That is because is required more energy to decrease its temperature by 1°C.

Thus, in the problem, liquid A has the larger specific heat

At constant temperature and moles, what happens to the pressure of a gas
as the volume of that gas increases? *

Answers

Answer:

Avagadro's Law- Gives the relationship between volume and amount of gas in moles when pressure and temperature are held constant. If the amount of gas in a container is increased, the volume increases. ... This means more impacts on the walls of the container and an increase in the pressure.

Explanation:

I'll give you 100 points
Which are evidence of seafloor spreading? Select three options. A.molten material B.magnetic stripes C.continent material D.drilled core samples E.ocean water samples

Answers

A. Molten material
B. Magnetic stripes
D. Drilled core samples

please do this guys i need a lot of help please!

Answers

Answer:

the European countries grew together.

Explanation:

Europe saw human inflows from east and southeast.

the Roman Empire came to dominate the entire Mediterranean basin.

European politics from 1947 to 1989 made the European countries grew together.

Silver (1) oxide → silver + oxygen gas​

Answers

Yes epic gamesssss yay

Answer: come on lets link can do what i do

if a sample of gas at 25.2 c has a volume of 536mL at 637 torr, what will its volume be if the pressure is increased to 712 torr?

Answers

Considering ideal gas:
PV= RTn

T= 25.2°C = 298.2 K

P1= 637 torr = 0.8382 atm

V1= 536 mL = 0.536 L

:. R=0.082 atm.L/K.mol

:. n= (P1V1)/(RT) = ((0.8382 atm) x (0.536 L))/
((0.082 atmL/Kmol) x (298.2K))

:. n= O.0184 mol

Then,
P2= 712 torr = 0.936842 atm

V2 = RTn/P2 = [(0.082atmL/
Kmol) x (298.2K) x (0.0184mol) ]/(0.936842atm)

:.V2 = 0.4796 L
OR
V2 = 479.6 ml

It takes 300 N to move a box 10 meters in 10 seconds. How much power is
required?
A. 30,000 W
B. 100 W
C. 3,000 J
D. 300 W
Plz help

Answers

Answer:

Power, P = 300 W

Explanation:

We have,

Force acting on the box to take it is 300 N

It is moved to a distance of 10 m in 10 seconds

It is required to find the power required to move the box. The rate at which work is done is called power required by an object. It can be given by the formula as follows :

[tex]P=\dfrac{W}{t}\\\\P=\dfrac{Fd}{t}\\\\P=\dfrac{300\times 10}{10}\\\\P=300\ W[/tex]

So, the power required is 300 W.

6. Bacteriorhodopsin is an integral membrane protein that uses solar energy (absorbed by its retinal chromophore) to pump protons out of the cell against an electrochemical gradient. Re-entry of the protons into the cell (down the gradient through its ATPase) is then used to drive the synthesis of ATP from ADP and Pi. Consider the following conditions: intracellular pH is 9.4 and extracellular pH is 6.4, and there is a transmembrane electrical gradient of 120 mV (negative inside). The concentration of intracellular [ATP] = 1 mM, [ADP] = 50 µM, and [Pi] = 2 mM, and G° for ATP hydrolysis is -30.5 kJ/mol. Temperature is 27 °C. a. What is the energy cost of pumping one mole of H+ out of the cell? b. What is the minimal number of H+ that must re-enter the cell through the ATPase to provide sufficient energy to synthesize each ATP? Explain how you arrived at this answer quantitatively, of course.

Answers

Answer:

Explanation:

Hello!

a)

You have an integral membrane protein (Bacteriorhodopsin) that uses solar energy to pump protons out of the cell against its electrochemical gradient.

To calculate the energy needed by the protein to pump one molecule out of the cell you need to apply the free energy difference equation for a charged molecule:

ΔG= 2.303RTlog₁₀[tex](\frac{[H^+]out}{[H^+]in})[/tex]+zFΔV

Where

ΔG= free energy difference per molecule transferred from the inside to the outside

R= gas constant 8.315*10⁻³ kJ/mol

T= Temperature in Kelvin (273.15 + TºC)

z= Valency of the ion (ej Na⁺ is z= +1 and Cl⁻ is z= -1)

F= Faraday constant 96.5 kJ/V*mol

ΔV= membrane potential (Volts)

The information you have is:

Intracellular pH= 9.4

Extracellular pH= 6.4

ΔV= 120 mV

Temperature 27ºC

Using the values of pH you can calculate the intracellular and extracellular proton concentrations:

Remember the pH of a solution is calculated as pH=-log[H⁺] so if you reverse the logarithm, you'll find the concentration of protons:

b= logₐ C ⇒ C= aᵇ

[H⁺]intracelular= 10⁻⁹'⁴

[H⁺]extracelular= 10⁻⁶'⁴

Now you need to match the units of the temperature and electrical gradient to the ones in the equation:

The temperature needs to ve in Kelvin: T= 273.15 + 27ºC= 300.15K

The electrical gradients need to be in Volts: ΔV= 120 mV= 0.12V

Now you can replace the data in the formula and calculate how much energy is needed to pump one proton outside the cell:

ΔG= 2.303RTlog₁₀[tex](\frac{[H^+]out}{[H^+]in})[/tex]+zFΔV= 2.303*( 8.315*10⁻³ kJ/mol)*300.15K*log[tex](\frac{10^{-6.4}}{ 10^{-9.4}} )[/tex]+(+1)*96.5 kJ/V*mol*0.12V= 28.82 kJ/mol

It costs 28.82 kJ/mol to pump one mole of H⁺ outside the cell.

b)

To synthesize one molecule of ATP the ATP synthase uses the electrical gradient produced by the spontaneous pass of protons through the membrane. This process is called the proton-motive force.

The ATP synthase consists of two subunits F₀ and F₁ with a rotational motor mechanism that allows it to produce and release ATP.

F₁ has the subunits α, β, σ, γ, ε in charge of synthesizing ATP

F₀ is a proton pore, made of 3 subunits a, b and c. 6 subunits c make up the transmembrane ring in charge of rotation, this ring is connected to the subunits γ and ε. Each time a proton passes, it makes the ring rotate which makes the subunits γ rotate.

Each time the subunit γ rotates 360º, 3 ATP molecules are synthesized and freed. A full rotation of γ means that the c-ring also made a full rotation (for this you need one proton per subunit)

If the ring has 6 c-subunits and, then each ATP molecule needs 6/3= 2 protons to need to pass for each ATP molecule.

I hope this helps!

How to make isopropyl alcohol

Answers

Answer:

.It is easily synthesized from the reaction of propylene with sulfuric acid, followed by hydrolysis. Isopropyl alcohol (2-propanol) is made by indirect hydration of propylene (CH2CHCH3).… In some cases the hydration of propylene is carried out in one step, using water and a catalyst at high pressure.

Hope it'll help!

stay safe:)

A container is filled with 10 mol of gas and the pressure (Pi) is measured. If 5 mol are removed, what is the new pressure (Pf)?

Answers

Answer:

1/2 of the Pi

Explanation:

PV = nRT

we are going to assume the only things changing are pressure and number of mols, so we change the formula and substitute the variables to make it what we are looking for

[tex]\frac{Pi}{ni} = \frac{Pf}{nf}[/tex]

then we will assume Pi as 1 as it is not given, so we can state it easier

[tex]\frac{1atm}{10mol} = \frac{xatm}{5mol}[/tex]

then either cross multiply or just work it out to be

[tex]\frac{1}{2}[/tex] which we can say as "half of the initial pressure" as no number is given for initial pressure

If I add 50 mls of water to 300 mls of 0.6M KNO3 solution, what will be the molarity of the diluted solution?

Answers

Answer:

[tex]M_2=0.51M[/tex]

Explanation:

Hello,

In this case, for this dilution process, we understand that the moles of the solute (potassium nitrate) remain unchanged upon the addition of diluting water. However, the resulting or final volume includes the added water as shown below:

[tex]V_2=300mL+50mL=350mL[/tex]

In such a way, we are able to relate the solution before and after the dilution by:

[tex]V_1M_1=V_2M_2[/tex]

Hence, we solve for the final molarity as:

[tex]M_2=\frac{M_1V_1}{V_2}=\frac{0.6M*300mL}{350mL}[/tex]

Best regards.

[tex]M_2=0.51M[/tex]

.The pH is 3. What is [H+]? *
1 point
0.001
0.01
100
1000​

Answers

Answer:

0.001 M

Explanation:

The pH scale is used to determine the acidity or basicity of a solution.

If pH < 7, the solution is acid.If pH = 7, the solution is neutral.If pH > 7, the solution is basic.

The pH is related to the concentration of hydrogen ions through the following expression.

pH = -log [H⁺]

[H⁺] = antilog -pH = antilog - 3 = 0.001 M

PbCl2+ AgNO3------>Pb(NO3)2+ AgCl

Decomposition

Synthesis

Double displacement

Exothermic

Answers

Answer:

Option C

Explanation:

A double displacement reaction is the one in which two chemical compounds having a cation and anion in each exchange their positive and negative ions thereby forming new compounds or products.

Here,

The first compound [tex]PbCl_2[/tex] has a positive ion [tex]Pb[/tex] and negative ion [tex]Cl^-[/tex]

Like wise the second compound [tex]Ag(NO_3)[/tex] has a positive ion [tex]Ag[/tex] and negative ion [tex]NO_3[/tex]

The new compounds will be formed when cation of one compound attaches with the anion of other compound. Hence the new compounds are

[tex]Pb(NO_3)_2[/tex]

[tex]AgCl[/tex]

This is example of double displacement reaction.

Option C is correct

Which factor would slow down a chemical reaction? (Choose all that apply)

A)Adding an inhibitor

B)Decreasing temperature

C)Decreasing particle size

D)Increasing particle size

Answers

B) decreasing temperature

Answer:

(decreasing particle size) C

Explanation: That is one of the answers, if there are more I am sorry.

How do you calculate the number of protons, neutrons, and electrons in an element?

Answers

Answer:

The first thing you will need to do is find some information about your element. Go to the Periodic Table of Elements and click on your element. If it makes things easier, you can select your element from an alphabetical listing.

Number of Protons = Atomic Number

Number of Electrons = Number of Protons = Atomic Number

Number of Neutrons = Mass Number - Atomic Number

For krypton:

Number of Protons = Atomic Number = 36

Number of Electrons = Number of Protons = Atomic Number = 36

Number of Neutrons = Mass Number - Atomic Number = 84 - 36 = 48

Explanation:

hope this helps, have a good day :-)

Write and balance the double replacement reaction between barium sulfate and titanium (II) oxide.

Answers

Answer:

BaSO4(aq) + TiO(aq) —> BaO(aq) + TiSO4(aq)

Explanation

The equation for the reaction between barium sulfate and titanium (II) oxide is given below:

BaSO4 + TiO —>

In solution, the reactants will dissociates as follow:

BaSO4(aq) —> Ba^2+(aq) + SO4^2-(aq)

TiO(aq) —> Ti^2+(aq) + O^2-(aq)

The double displacement reaction will occur as follow:

Ba^2+(aq) + SO4^2-(aq) + Ti^2+(aq) + O^2-(aq) —> Ba^2+O^2-(aq) + Ti^2+SO4^2-(aq)

We can see that a double displacement reaction occurred as there is a double exchange of ions in the solution. The elemental equation is given below:

BaSO4(aq) + TiO(aq) —> BaO(aq) + TiSO4(aq)

What is the hydronium ion concentration of a 0.100 M acetic acid solution with Ka = 1.8 × 10-5? The equation for the dissociation of acetic acid is: CH3CO2H(aq) + H2O(l) ⇌ H3O+(aq) + CH3CO2-(aq) What is the hydronium ion concentration of a 0.100 M acetic acid solution with Ka = 1.8 × 10-5? The equation for the dissociation of acetic acid is: CH3CO2H(aq) + H2O(l) ⇌ H3O+(aq) + CH3CO2-(aq) 1.3 × 10-2 M 4.2 × 10-2 M 1.3 × 10-3 M 4.2 × 10-3 M

Answers

Answer:

1.3×10⁻³ M

Explanation:

Hello,

In this case, given the dissociation reaction of acetic acid:

[tex]CH_3CO_2H(aq) + H_2O(l) \rightleftharpoons H_3O^+(aq) + CH_3CO_2^-(aq)[/tex]

We can write the law of mass action for it:

[tex]Ka=\frac{[H_3O^+][CH_3CO_2^-]}{[CH_3CO_2H]}[/tex]

Of course, excluding the water as heterogeneous substances are not included. Then, in terms of the change [tex]x[/tex] due to the dissociation extent, we are able to rewrite it as shown below:

[tex]1.8x10^{-5}=\frac{x*x}{0.100-x}[/tex]

Thus, via the quadratic equation or solve, we obtain the following solutions:

[tex]x_1=-0.00135M\\x_2=0.00133M[/tex]

Obviously, the solution is 0.00133M which match with the hydronium concentration, thus, answer is: 1.3×10⁻³ M in scientific notation.

Regards.

Answer:

1.3×10^-3 M

Explanation:

Step 1:

Data obtained from the question:

Equilibrium constant (Ka) = 1.8×10^-5

Concentration of acetic acid, [CH3COOH] = 0.100 M

Concentration of hydronium ion, [H3O+] =..?

Step 2:

The balanced equation for the reaction.

CH3CO2H(aq) + H2O(l) ⇌ H3O+(aq) + CH3CO2-(aq)

Step 3:

Determination of concentration of hydronium ion, [H3O+].

This can be obtained as follow:

Ka = [H3O+] [CH3CO2-] / [CH3CO2H]

Initial concentration:

[CH3COOH] = 0.100 M

[H3O+] = 0

[CH3CO2-] = 0

During reaction

[CH3COOH] = – y

[H3O+] = +y

[CH3CO2-] = +y

Equilibrium:

[CH3COOH] = 0.1 – y

[H3O+] = y

[CH3CO2-] = y

Ka = [H3O+] [CH3CO2-] / [CH3CO2H]

1.8×10^-5 = y × y / 0.1

Cross multiply

y^2 = 1.8×10^-5 x 0.1

Take the square root of both side

y = √(1.8×10^-5 x 0.1)

y = 1.3×10^-3 M

[H3O+] = y = 1.3×10^-3 M

Therefore, the concentration of the hydronium ion, [H3O+] is 1.3×10^-3 M

Question 13: Consider the strength of the Hβ absorption line in the spectra of stars of various surface temperatures. This is the amount of light that is missing from the spectra because Hydrogen electrons have absorbed the photons and jumped from level 2 to level 4. How do you think the strength of Hβ absorption varies with stellar surface temperature?

Answers

Answer:

The absorption and strength of the H-beta lines change with the temperature of the stellar surface, and because of this, one can find the temperature of the star from their absorption lines and strength. To better comprehend, let us look into the concept of the atom's atomic structure.  

Atoms possess distinct energy levels and these levels of energy are constant, that is, the temperature has no influence on it. However, temperature possesses an influence on the electron numbers found within these levels of energy. Therefore, to generate an absorption line of hydrogen in the electromagnetic spectrum's visible band, the electrons are required to be present in the second energy level, that is when it captivates a photon.  

Therefore, after captivating the photons the electrons jump from level 2 to level 4, which shows that there is an increase in the stellar surface temperature and at the same time one can witness a decline in the strength of the H-beta lines. In case, if the temperature of the surface increases too much, then one will witness no attachment of electron with the hydrogen atom and thus no H lines, and if the temperature of the surface becomes too low, then the electrons will stay in the ground state and no formation of H lines will take place in that condition too.  

Hence, to generate a very robust H line, after captivating photons the majority of the electrons are required to stay in the second energy level.  

PLEASE HELP!!!! How many moles of helium are needed to fill a balloon to a volume of 4.9 at 296°K and 0.78 atm?

Answers

Answer:

THE NUMBER OF MOLES OF HELIUM NEEDED TO FILL A BALLOON AT A VOLUME OF 4.9 L AT 296 K AND 0.78 atm IS 0.00338 moles.

Explanation:

The number of moles is calculated using

PV = nRT

P = Pressure = 0.78 atm

V = volume = 4.9 L

R = gas constant = 0.082 Latm/molK

T = temperature = 296 K

n= number of moles

Substituting theses values and sloving for n, we obtain;

n = PV / RT

n = 0.78 * 4.9 / 0.082 * 296

n = 3.822 / 24.272

n = 0.00338 moles.

So therefore, the number of moles is 0.00338 moles.

Answer:

The number of moles of helium needed is 0.157 moles helium

Explanation:

Step 1: Data given

Volume of the balloon = 4.9 L

Temperature= 296 K

Pressure = 0.78 atm

Step 2: Calculate moles of helium gas

p*V = n*R*T

⇒with p = the pressure = 0.78 atm

⇒with V = the volume = 4.9 L

⇒with n = the number of moles of the helium gas = TO BE DETERMINED

⇒with R = the gas constant = 0.08206 L*atm/mol* K

with T = the temperature = 296 K

n = (p*V) / (R*T)

n = (0.78 atm* 4.9 L) / (0.08206 L*atm/mol*K * 296 K)

n = 0.157 moles of helium

The number of moles of helium needed is 0.157 moles helium

g A chemistry student needs of thiophene for an experiment. She has available of a w/w solution of thiophene in benzene. Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button. Round your answer to significant digits.

Answers

The given question is not complete, the complete question is:

A chemistry student needs 5.00 g of thiophene for an experiment. She has available 0.50 kg of a 28.7% w/w solution of thiophene in benzene, Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button Be sure your answer has the correct number of significant digits. X

Answer:

The correct answer is 17.4 grams.

Explanation:

As mentioned in the given question, 28.7 percent w/w solution thiophene in benzene shows that,  

(wt. of thiophene / wt. of thiopene + benzene) * 100 = 28.7

0.50 kg of the solution indicates that it is 500 grams of the solution.  

Therefore, the amount of thiophene found in the 500 grams of the solution is,  

500 g * 28.7 / 100 = 143.5 gm

Thus, 143.5 grams of thiophene is found 500 grams of the solution.  

Now, 1 gram of thiophene will be in 500/143.5 of solution.  

Therefore, 5 grams of thiophene will be in 500/143.5 * 5 g of the solution = 17.42 grams of the solution.  

Hence, the mass of the solution to be used by the student in the given case will be 17.4 grams.  

What is the molarity of sodium hydroxide solution made by combining 2.0 L of 0.60
NaOH With 495 mL 3.0 M NaOH? Assume the volumes of the two solutions to be additive___M

Answers

Answer:

[tex]M=1.1M[/tex]

Explanation:

Hello,

In this case, since we are mixing two NaOH solutions, the first step is to compute the total moles once the mixing is done, by using the volumes and concentrations of each solutions and subsequently adding them:

[tex]n_T=2.0L*0.60\frac{mol}{L}+495mL*\frac{1L}{1000mL}*3.0\frac{mol}{L}= 2.7molNaOH[/tex]

Next, we compute the total volume by adding the volume of each solution:

[tex]V_T=2.0L+495mL*\frac{1L}{1000mL}= 2.495L[/tex]

Finally, we compute the molarity of the resulting solution by the division between the total moles and the total volume:

[tex]M=\frac{2.7mol}{2.495L}\\ \\M=1.1M[/tex]

Best regards.

What is the symbol for the entity that has 17 protons, 20 neutrons, and 18 electrons?

Answers

hEy!!!

Chlorine(CL) is the symbol for the entity that has 17 protons,20 neutrons and 18 electrons.

Hope it will be helpful to you...

Answer:chlorine

Explanation:

If you start with 64g of a radioactive element how many half-lives would occur before 8g remain?

Answers

Answer:

3 half-lives

Explanation:

The half-life is the time that it takes to a radioactive element to decay to half of its initial amount.

Let's suppose we start with 64 g of the radioactive element.

After 1 half-life, the mass of the element will be 32 g.After 2 half-lives, the mass of the element will be 16 g.After 3 half-lives, the mass of the element will be 8 g.

SCIENCE QUESTION:
The picture below shows a satellite image of Earth from outer space.What is labeled “White” on the satellite image of Earth?
A. gas in Earth's atmosphere, which keeps Earth's temperature moderate, cycles fluids, and prevents most objects from impacting Earth's surface
B. gravity, which holds all living organisms to Earth, pulls water from clouds, and keeps Earth circulating around the Sun
C. a magnetic field, which controls the movement of water in Earth's water cycle
D. atmospheric ice crystals, which never melt and keep Earth's temperature coo

Answers

Answer:

C

Explanation:

The reflection if sunlight on the water makes the water look silver,gray,white

A 125 g sample of strontium was heated from 0°C to 20°C. It absorbed 750 J of energy. What is the specific heat capacity of iron?

Answers

Answer:

Specific heat capacity of iron (C) = 0.3 J/GK

Explanation:

Given:

Mass of sample (m) = 125 gram

Change in heat (ΔT) = 20°C - 0°C = 20°C

Absorbed energy (ΔE) = 750 J

Find:

Specific heat capacity of iron (C) = ?

Computation:

⇒ Specific heat capacity of iron (C) = ΔE / [mΔT]

⇒ Specific heat capacity of iron (C) = 750 / [125 × 20]

⇒ Specific heat capacity of iron (C) = 750 / [2,500]

⇒ Specific heat capacity of iron (C) = 0.3 J/GK

Answer:

Specific heat capacity of iron (C) [tex]= 0.3[/tex] J/g°C

Explanation:

As we know that

Specific heat capacity of iron (C) [tex]=\frac{\delta E}{ [m* \delta T]}[/tex]

Where [tex]\delta E[/tex] represents the change in the energy

m represents the mass of the sample and

[tex]\delta T[/tex] represents the change in temperature.

Given:

Mass of sample (m) [tex]= 125[/tex] gram

Change in heat ([tex]\delta T[/tex] ) [tex]20 - 0 = 20[/tex]

Absorbed energy ([tex]\delta E[/tex])[tex]= 750[/tex] J

Substituting the given values in above equation, we get -

Specific heat capacity of iron (C)

[tex]= \frac{750}{125*20}[/tex]

Specific heat capacity of iron (C) [tex]= 0.3[/tex] J/g°C

Dysphagia is the name of a disorder that disrupts
А
the swallowing reflex
B
the absorption of essential nutrients
acid levels in the stomach
C
D
the stomach lining

Answers

Answer:

A. The Swallowing reflex

Explanation:

Dysphagia Is a a condition that makes swallowing difficult.

Dysphagia is the name of a disorder that disrupts
А
the swallowing reflex

Other Questions
ASAP please........! When proteins help transport molecules in and out of the cell, it is called Highlight the detail that reveals one of Mommas actions.Mrs. Flowers didn't belong to our church, nor was she Momma's familiar. Why on earth did she insist on calling her Sister Flowers? Shame made me want to hide my face. Mrs. Flowers deserved better than to be called Sister.I Know Why the Caged Bird Sings,Maya AngelouWhat inference can be made about Momma based on her action in this passage?She wishes Mrs. Flowers went to her church.She dislikes Mrs. Flowers.She believes she is equal to Mrs. Flowers.She hopes she can be like Mrs. Flowers. Which of the following items are NOT used to create an electric motor?A. MagnetsB. Electric CurrentC. TurbinesD. Copper Wire Fill the blank with the correct Indirect Object Pronouns (me, te, le, nos, les)1. A los estudiantes ___ aburre la clase de historia. 2. A mi madre ___ interesan los cuadros de Picasso. 3. A mi no ___ gustar ir al parque. 4. A nosotros ___ faltan los libros. 5. A ti ___ duele la cabeza. Write and balance the double replacement reaction between barium sulfate and titanium (II) oxide. What table represent a linear function Prisoners of war camps were during? a. World war 1 b. Great Depression c. World war 2 Un grupo de amigos toman un refresco cada uno y deben pagar 9 por el total de las consumiciones. Como hay dos que solo pueden poner 1 , los dems deben aumentar su aportacin en 0,25 cada uno. Cuntos amigos son? Which ordered pair needs to be removed in order for themapping to represent a function?(-3,-4)(-2, -1)(1, -3)(3.7) Question 2 (1 point)A diagram is a different from an illustration becauseoa diagram has parts that are labeled.oba diagram is a visual text feature.a diagram is separate from the text.oda diagram adds information to the text. Is there more that you and your family could do to recycle? Can you come up with three (3) ideas to reuse some of the waste products in your home? what is (4x+1)(4x+1) Which statement best summarizes the main idea of the above passage from"An Indian Father's Plea"?A. Wind-Wolf learned much of what he learned from public school.B. Wind-Wolf has a different educational background than manyother children.O C. Wind-Wolf looks and acts differently than the other children in hisschool.D. Wind-Wolf will often answer questions at school using answershe learned from those in his tribe. You go out with a group of friends and notice that Tomasa is more sociable than Miguel. How would you say this in Spanish?Tomasa soy ms sociable que Miguel.Tomasa es ms sociable que Miguel.Tomasa es menos sociable que Miguel.Tomasa son ms sociable que Miguel. On 3/1/14 Fox Corp bought back 1,000 shares of their common stock for $15 per share. There were no shares in the treasury prior to that. On 5/23/14 they sold 200 of those shares for $17 each. On 6/19/14 they sold another 400 shares of those shares for $10 per share. Consider writing out all of your entries on scratch paper to assist you in answering questions 31 and 32. What will the remaining balance in the treasury stock account be after all of the above transactions have been recorded Please answer any that you can Three words that describe Yucatn peninsula 7.6 cm3.7 cmFind the area of the parallelogram. Was the United States justified in its invasion of Cuba (i.e. the Bay of Pigs)? What U.S. valuesor policies do you think motivated this event?