Answer:
SPECIFIC HEAT is the amount of heat needed to raise the temperature by one degree
1 gram of substance. Each substance has its own specific heat and if the physical state changes (e.g. liquid, solid, gas)
the specific heat also changes . Units are expressed in Joules per gram per degree Celsius (J / g ° C). Sometimes
the J / kg K unit is also used. The latter unit is technically the most correct unit to use, but since
since the former is quite common, it is necessary to know both. The specific heat of H2O depending on
phase is indicated in the table.
Explanation:
Hope it helps.
I will give Brainliest please help. :(
The given equation represents a chemical reaction occurring in plants. Does this chemical equation show Conservation of Mass?
Answer:
Conservation of mass occur when your chemical equation is balanced.
So let's see if it is balanced:
6CO₂ + 6H₂O ------> C₆H₁₂O₆ + O₂
You need to have the same quantity of atoms of each element on the product side and reactant side.
Reactant side: 6CO₂ + 6H₂O
Product side: C₆H₁₂O₆ + O₂
What is the concentration of H+ in a 2.5 M HCl solution?
Answer:
The concentration of H⁺ in a 2.5 M HCl solution is 2.5 M
Explanation:
As HCl is a strong acid and hence a strong electrolyte, it will dissociate as
HCl ⟶ H⁺ + Cl⁻
So, The concentration of H⁺ will be 2.5 M (same as HCl)
Thus, The concentration of H⁺ in a 2.5 M HCl solution is 2.5 M
-TheUnknownScientist 72
How many particles are in 3.5 g of P
Explanation:
Hence an atom is made up of three particles called electrons, protons and neutrons and 1 mol exactly contains 6.02214076×1023 atoms or particles. Thus 2.11×1024 atoms are present in 3.5 mol of arsenic.
A student rides a bicycle 100 meters in 25 seconds. What is the students speed?
Answer:
The student's speed is 4 m/s.
Explanation:
Speed = Distance/Time
Speed = 100m/25s
Speed = 4 m/s
Karl likes to use cruise control when he drives on
the highway. After setting cruise control at 33.53
m/s (75 mph). At this speed, how long would it
take Karl to travel 8 kilometers?
Answer:
3.96 MINUTES
Explanation:
Karl likes to use cruise control when he drives on
the highway. After setting cruise control at 33.53
m/s (75 mph). At this speed, how long would it
take Karl to travel 8 kilometers?
VELOCITY = DISTANCE/TIME
OR
V=D/T
SO
VT=D
SO
T=D/V
THE DISTANCE IS 8 KM
THE VELOCITY IS 75 MPH
THERE ARE 1.61 KM PER MILE
SO
75M[H =
75 X 1.61 KM/H =
121 KM/HR
T=D/V
T=8/121 =0.066 HOUR =
0.066 X 60 MINUTES =
3.96 MINUTES
CHECK
75 MPH =
(75 X 1.61) KM/60 MINUTES =
120,75 KM/60 MINUTES=
2.01 KM/MINUTE
to travel 8 K,M WILL TAKE
8/2.01 = 3.98 minutes
How many mols in 22.45g of water?
Answer:
1.247mol
Explanation:
moles=mass/molar mass
molar mass of water = 1+1+16=18
mass = 22.45
22.45÷18
= 1.247 moles of water
Answer:
Explanation:
Explanation
Periodic tables vary in how many places of sig digits they show. I always use approximate values which means that you will have to redo the question using your values
Water (1 mole)
2 * H = 1.01 * 2 = 2.02
1 * O = 16 * 1 = 16.00
Mass 1 mole = 18.02
Moles water
given mass = 22.45
molar mass = 18.02
moles = given mass/ molar mass
moles = 22.45 / 18.02
moles = 1.246 moles
All the participants in the Genius Dog Challenge are
border collies, which some experts think are the ____
breed of dog. (This was for chemistry class so dont ask why its under chemistry)
All the participants in the Genius Dog Challenge are Border Collies, which some experts believe to be the intelligent breed of dog.
Border Collie is the name of a breed of dog that is characterized by:
It arose on the border between Scotland and England.Its main use is shepherd dog.It is a dog considered one of the most intelligent and obedient.Border Collies have physical characteristics such as:
Medium sizeCoat: double coat of thick hair that sheds often.Colors: most common are black and white.Learn more in: https://brainly.com/question/18670592
if n=3, what are the quantam numbers l and m
Answer:
1=n yan ang alam heheheheh sorry kong mali
What is the osmotic pressure of a solution made by dissolving 35.0 g of glucose, C6H12O6, in enough water to form 800.0 mL of solution at 11.0 ∘C ?
Answer:
Osmotic pressure, a colligative property can be determined from
π = iMRT
π = osmotic pressure in atm
i = van't Hoff factor = 1 for glucose, a non electrolyte
M = molarity = 30.0 g x 1 mol/180 g x 1/0.650 L = 0.2564 M
R = gas constant = 0.0821 Latm/Kmol
T = temperature Kelvin = 14.0º + 273 = 287K
Explanation:
How much do 3.01 x 1023 atoms of Helium weigh?
Answer:
4.0 grams
Explanation:
I hope that helped!!
Giving brainly for correct answer! :)
Answer: I think its in order, not really sure. First answer on top. Next answer on the left and the Last answer on the right.
What is the difference between speed and velocity?
Answer:
Speed is how far something goes in a unit of time.
Velocity is the same as speed but with direction.
Explanation:
How is the pressure of a gas related to its
temperature?
1. Calculate the density of an object that is has a mass of 24 grams and a volume of 6 cm cubed
Answer:
4g/cm cubed
Explanation:
density=mass/volume
d=24/6
d=4
Which of the following statements about mass is true? (1 point)
A. A truck has a mass of 2,500 kilograms in the United States. If it goes to Canada, the mass will be converted to weight.
B. A truck has a mass of 2,500 kilograms in the United States. If it goes to Canada, the mass will be less.
C. A truck has a mass of 2,500 kilograms in the United States. If it goes to Canada, its mass will still be 2,500 kg.
D. A truck has a mass of 2,500 kilograms in the United States. If it goes to Canada, its mass will be more.
Answer:
a because mass is converted into weight
Pleaseeeee helppppppppppWhat is POH?
Answer:pOH is a measure of the hydroxide ion (OH-) concentration of a solution. As such, it can be used as an indicator of a substance's alkalinity or even its electrical conductivity in some cases. More specifically, pOH is the negative logarithm of the hydroxide ion content given by the expression: pOH = 14 – pH.
Explanation: hope this helps
Which BEST explains why the Earth has layers?
A.The Earth's layers formed because the heaviest materials (like iron and nickel) float on top of the lighter materials that make up the frost.
B.The Earth's layers formed because the heaviest materials (like iron and nickel) sink below the lighter materials that make up the crust.
Answer:
B
Explanation:
I know im right I forgot some of the lessons cause this was still in grade 3 now Im grade 6....
Which procedure would produce the best data for comparing the electrostatic forces between the molecules of different
substances? (1 point)
O Heat each substance in solid form for the same amount of time. Measure the temperature of each substand
O Heat each substance in liquid form to its boiling point. Measure the temperature of each substance
O Heat each substance in liquid form for the same amount of time. Measure the temperature of each substand
Heat each substance in solid form to its melting point. Measure the quantity of each substance that has
melted
The Whole Electrical Bonding Investigation Plan Quick check
1) B. boiling point, surface tension, vapor pressure
2) A. glycerin
3) C. the temperature at which additional heat energy causes the substance to change from a liquid to a gas
4) D. Heat each substance in liquid form to its boiling point. Measure the temperature of each substance
5) A. A liquid boils when the vapor pressure equals the atmospheric pressure.
Statement that explains the procedure would give the best data when making comparism of electrostatic forces that exist between the molecules of different substance is C: Heat each substance in liquid form for the same amount of time. Measure the temperature of each substand.
Electrostatic force can be regarded as attractive or repulsive forces that exist between particles, and this as a result of their electric charges. When making comparisons about electrostatic forces that exist between the molecules of different substance. Then the substance has to be heated in their liquid form with sane time period , then followed by measurements of the temperature of each stand.Therefore, option C is correct.
Learn more at:
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how many atoms of carbon atoms are in the reactant
Answer:
8
Explanation:
There are 8 carbon atoms in the reactants' side, because you multiply the 2 in front of C4H10 and the 4 under the C atom, and that gives you 8. So, 8 carbon atoms.
In which substance are the electrostatic forces between molecules the strongest?
(1 point)
O acetone
O propane
turpentine
glycerin
The Whole Electrical Bonding Investigation Plan Quick check
1) B. boiling point, surface tension, vapor pressure
2) A. glycerin
3) C. the temperature at which additional heat energy causes the substance to change from a liquid to a gas
4) D. Heat each substance in liquid form to its boiling point. Measure the temperature of each substance
5) A. A liquid boils when the vapor pressure equals the atmospheric pressure.
The substance with the strongest electrostatic force has been Glycerin.
The boiling point has been the temperature required for the conversion of the liquid phase to the gaseous phase. The boiling point has been dependent on the intermolecular forces between the molecule.
The molecule with the higher interactions have a higher boiling point, and the molecules with the weaker interaction forces have a lower boiling point.
Among the given compounds, Glycerin has been the compound with the highest boiling point, thus the interactions within the glycerin molecules have been the greatest.
For more information about electrostatic interaction, refer to the link:
https://brainly.com/question/13555353
Genes that confer resistance to antibiotics provide a selective advantage to organisms that are exposed to antibiotics. true or false
Answer:
True
Genes providing resistance to antibiotics will provide an organism protection against the antibiotics, which are used to kill it, therefore it is indeed an advantage for their survival
A cars is moving at 12 m/s and has a mass of 600 kg. What is the kinetic energy for the car? (Formula:KE= 1/2 MV2) 36,300J 43,200J 72,600J 86,400J
Explanation:
ano po topic nyo para maayos sagut
If there is no external force on a moving object, it will
A keep moving with constant velocity.
B gradually slow down until it stops.
c gradually speed up.
D maintain the same state of motion.
Estop moving
Answer:
B
Explanation:
B is the answerrrrr i think sooo
Chemistry help!
How much 1.50 M H3PO4, in mL, would you need to add to 50.00 mL of 3.50 M Ca(OH)2 in order to neutralize the solution?
_____ of mL of H3PO4
Answer:
Use the formula below
Explanation:
use the moles ratio for this by writing down the reaction and balancing the equation
I need help wit this
#1
[tex]\\ \sf\longmapsto2 Ca+O_2\longrightarrow 2CaO[/tex]
Balanced
#2
[tex]\\ \sf\longmapsto N_2+3H_2\longrightarrow 2NH_3[/tex]
Balanced
#3
[tex]\\ \sf\longmapsto 2Cu_2O+C\longrightarrow 4Cu+CO_2[/tex]
Balanced
#4
[tex]\\ \sf\longmapsto H_2O_2\longrightarrow H_2O+O_2[/tex]
Already balanced
Each element can be indentified by the number of _______ found in its nucleus, which also equals the elements _______ _______.
Answer:
Protons, Atomic number
What is happening when scientists use their five senses to learn new
information?
A. Drawing a conclusion
B. Forming a hypothesis
C. Making observations
C
D. Making predictions
VIOUS
Answer:
A, drawing a conclusion
Explanation:
How many moles of NO₂ would be required to produce 5.73 moles of HNO₃ in the presence of excess water in the following chemical reaction?
3 NO₂(g) + H₂O (l) → 2 HNO₃(g) + NO(g)
Answer:
8.595 mol NO2
Explanation:
5.73 mol HNO3 * [tex](\frac{3 mol NO2}{2 mol HNO3})[/tex] = 8.595 mol NO2
Can all alkyl halides react with water to give alcohols?
Not all acid-catalyzed conversions of alcohols to alkyl halides proceed through the formation of carbocations. Primary alcohols and methanol react to form alkyl halides under acidic conditions by an SN2 mechanism.
Not all acid-catalyzed conversions of alcohols to alkyl halides proceed through the formation of carbocations. Primary alcohols and methanol react to form alkyl halides under acidic conditions by an SN2 mechanism.
In these reactions the function of the acid is to produce a protonated alcohol. The halide ion then displaces a molecule of water (a good leaving group) from carbon; this produces an alkyl halide:
Again, acid is required. Although halide ions (particularly iodide and bromide ions) are strong nucleophiles, they are not strong enough to carry out substitution reactions with alcohols themselves. Direct displacement of the hydroxyl group does not occur because the leaving group would have to be a strongly basic hydroxide ion:
We can see now why the reactions of alcohols with hydrogen halides are acid-promoted.
Carbocation rearrangements are extremely common in organic chemistry reactions are are defined as the movement of a carbocation from an unstable state to a more stable state through the use of various structural reorganizational "shifts" within the molecule. Once the carbocation has shifted over to a different carbon, we can say that there is a structural isomer of the initial molecule. However, this phenomenon is not as simple as it sounds.
- BRAINLIEST answerer
A solution of HF is titraited with a 0.150M NaOH solution. The pH at the half equivalence point is ? The Ka of HF I 0.00068.
Answer:
don't know00000⁰0000000
