A process in which substances chemically rearrange to form new substances
Molecule
Energy
Organism
Chemical reaction
Matter
Cellular respiration

Answers

Answer 1

Answer:

Chemical reaction

Explanation:

After new substances are formed they can't be reversed to their original state.


Related Questions

6.900x10^10 ÷ 4.000x10^8

Answers

Answer:

1.725e+18

Explanation:

Which of the following is not a unit of volume?

A

L


B

mL


C

m^3

​3

​​


D

cm^2

​2
PLEASE ANSWER ASAP !! NEED THIS HANDED IN TN
​​

Answers

Answer:

The orest one is possible D

Explanation:

Do the following ! I'LL MARK THE BRAINLEST!
ITS SCIENCE!

Answers

Answer:

it's easier to look it up

Explanation:

The complete combustion of acetic acid, HC2H3O2(I) to form water, H2O(I), and CO2(g), at constant pressure releases 871.7 kJ of heat per mol of acetic acid.
Write a balanced thermochemical equation if 5.0g of acetic acid will be used in the reaction.
HC2H3O2(I) + O2 --- H2O(I) + CO2(g) H= -871.7 kJ

Answers

Answer:

HC2H3O2(I) + O2(g) ---> H2O(I) + CO2(g) ΔH= -72.35 kJ

Explanation:

We know that 5.0 g of acetic acid will contain, 5.0g/60 g/mol = 0.083 moles of acetic acid

Now from the reaction equation;

1 mole of acetic acid evolved -871.7 KJ of heat

0.083 moles of acetic acid will evolve 0.083 * -871.7 = -72.35 KJ

For 5.0 g of acetic acid, we can write;

HC2H3O2(I) + O2(g) ---> H2O(I) + CO2(g) ΔH= -72.35 kJ

Which ion forms the strongest ionic bond with a given anion? ​

Answers

Answer:

Explanation:

A cation with a 2+ charge will make a stronger ionic bond than a cation with a 1+ charge. A larger ion makes a weaker ionic bond because of the greater distance between its electrons and the nucleus of the oppositely charged ion.

What is the charge of an electron?

A-negative
B-neutral
C-positive
D-none of these

Answers

the answer is D-negative because protons are positive and neutrons are neutral
A. Negative Charge of an Electron

Predictions about the future based on the position of planets is an example of physics biology earth science pseudoscience

Answers

Answer:

Pseudoscience

Explanation:

Predicting the future based solely on the position of the planets is an example of pseudoscience.

Pseudoscience is a body of knowledge that is not based on the scientific method but on some unverifiable/unprovable claims.

Predictions about the future can only be valid if it is based on the scientific method, not just about the position of the planet. The scientific method involves observation, hypothesis formulation, testing of the hypothesis through repeatable experiments, and arriving at conclusion.

Any other statement or belief that is not based on these procedures is said to be pseudoscientific.

Answer:

The answer to your question is pseudoscience.

Explanation:

I took the module 1 exam and got it right, yesterday.

C3Hg + 02 → CO2 + H2O
This chemical equation represents the combustion of propane. When correctly balanced, the coefficient for water
is
16.
2.
8.
4.

Answers

Answer:

4

Explanation:

The following equation, which depicts the combustion of propane, is given in this question as follows:

C3H8 + 02 → CO2 + H2O

However, this equation is not yet BALANCED because the number of atoms of each element is not the same on the reactant and product side. To balance the equation, we make use of COEFFICIENT to ensure that the number of atoms of each element on both side correlates.

The balanced equation is as follows:

C3H8 + 502 → 3CO2 + 4H2O

Therefore, the coefficient for water (H2O) after balancing the equation is 4.

The study of chemicals is called chemistry.

The correct answer is D.

The equation is not yet BALANCED because the number of atoms of each element is not the same on the reactant and product sides.

To balance the equation, we make use of COEFFICIENT to ensure that the number of atoms of each element on both sides correlates.

After balancing the equation is as follows:

[tex]C_3H_8 + 50_2 → 3CO_2 + 4H_2O[/tex]

Hence, the correct answer is 4 which shows the balanced water.

For more information, refer to the link:-

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Which job title describes a person with a career in green energy?

Answers

Answer:

Natural resource professional

Explanation:

The job title that describes a person with a career in green energy is a hydroelectric technician. The correct option is c.

What is green energy?

Green energy is renewable energy and these energies are produced by renewable resources. Renewable resources are the resources that will not be reduced, and these natural resources are present, and these energies can reproduce again by these resources.

The hydroelectric technician is the person who checks the technical problems of a hydroelectric power plant. Hydroelectricity is produced by water.

This is a renewable resource, and it does not produce any kind of pollution, So a hydroelectric technician will be a job title that describes a person with a career in green energy.

Therefore, the correct option is c., hydroelectric technician.

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The question is incomplete. Your most probably complete question is given below:

Elevator installer

sewing machine operator

hydroelectric technician

animal trainer

The nucleus of a fluorine atom has a charge of?


A. +19

B. 0

C. +9

D. +1

Answers

Answer: B

Explanation: A fluorine atom has nine protons and nine electrons, so it is electrically neutral. (neutral =0)

The nucleus of a fluorine atom has a charge of zero as the atom has equal number of positive and negative charges.

What is  an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Low, gray, layered clouds that cover the sky and bring steady rain are O A. cumulus O B. cirrus O C. cumulonimbus OD. nimbostratus​

Answers

Answer:

D Nimbostratus

Explanation:

What is the volume of 4.78g of O2 gas at STP?

Answers

Answer:

Explanation:

The trick here is to realize that if you know the volume of a gas at STP, you can use the fact that

1

mole of any ideal gas occupies

22.7 L

under STP conditions to calculate how many moles of gas you have in your sample.

Under STP conditions:

1 mole of an ideal gas = 22.7 L

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

In your case, you know that your sample of gas occupies

2.28 L

under STP conditions, which are currently defined as a pressure of

100 kPa

and a temperature of

0

C

.

This means that your sample will contain

2.28

L

molar volume of a gas at STP



1 mole gas

22.7

L

=

0.10044 moles gas

Now, the molar mass of the gas is the mass of exactly

1

mole of the gas. In your case, you know that you get

3.78 g

for every

0.10044

moles, which means that you have

1

mole

3.78 g

0.10044

moles

=

37.6 g

Since this is the mass of

1

mole of gas, you can say that the molar mass of the gas is

molar mass = 37.6 g mol

1

−−−−−−−−−−−−−−−−−−−−−−−

i’m not surreeeeeeeeeee

Is water a reactant or product?

Answers

Answer: Reactant

Explanation:

In simple wording, Water act as a reactant and it broke or we can say split the larger molecule in the smaller ones, The H and OH bonds are attached to the two products that are formed after the reaction. Another process in which water is used as an important reactant is photosynthesis.

10. There are two bears that both have the same proteins for ear shape in their cells. The bears have
different parents. What can you say about the bears' ear shape?

Answers

Answer:

They will have the same ear shape since their proteins connect in the same ways to determine ear shape.

Explanation:

I majored in Chemistry

Answer:

They will have the same ear shape since their proteins connect in the same ways to determine ear shape.

Explanation:

would using a strainer be filtration?

Answers

Answer:

To some extent, yes

Explanation:

How many grams of NH3 are needed to make 2.50 moles of (NH4)2SO4?
2 NH3(g) + H2SO4(aq) --> (NH4)2SO4(aq)

Answers

Answer:

85.155g NH3

Explanation:

An object has a volume of 825 cm3 and a density of 13.6 g/cm3. Find its
mass

Answers

answer: 11,200 g

step by step explanation:

D= M/V
M= DV
M= (13.6 g/cm^3) (825cm^3)
M= 11,200 g

The mass of an object is the product of its volume and density. The mass of a the object with a volume of 825 cm³ and a density of 13.6 g/cm³ is 11220 g.

What is density ?

Density of substance is the measure of its mass per unit volume. It describes how closely its particles are packed. Density depends on the bond type, temperature and pressure.

Volume of the object is the space occupied by its particles. Volume can be expressed in L, ml, cm³, dm³ etc. Only solids and liquids has a definite volume and the volume of gases is that of the container.

Give that, volume of the object = 825  cm³

density =  13.6 g/cm³

Mass = volume × density

m = 825  cm³ ×  13.6 g/cm³ = 11220 g

Therefore, the mass of the object is 11220 g.

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You need to make an aqueous solution of 0.150 M sodium fluoride for an experiment in lab, using a 500 mL volumetric flask. How much solid sodium fluoride should you add?

Answers

Answer:

Explanation:

Solution required is .15 M 500 mL sodium fluoride .

molecular weight of sodium fluoride = 42

one mole of sodium fluoride = 42 grams

No of moles contained in the solution of .15M , 500 mL solution

= .15 x 0.5 moles = .075 moles

1 mole = 42 g

.075 moles = .075 x 42 = 3.15 grams .

So mass of sodium fluoride required = 3.15 g .

Energy of motion is called ________energy *

Answers

Kinetic energy
.............

Answer:

Kinetic - Kinetic energy is the energy of motion

Explanation:

Thermal energy - heat energy

Potential energy - energy that is stored

Hope this helped!

Have a supercalifragilisticexpialidocious day!

What does microbiome do to your cells?

Answers

Here’s what I found Hope I helped ;)

The proton number of barium (Ba) is 56. It is in Group II of the periidic table how many electrons would you expect a barium atom to contain in its outer energy level?

Answers

Answer:

A barium atom would be expected to contain 2 electrons in its outer energy level.

Explanation:

The columns of the periodic table are called groups. There are eighteen groups, numbered from 1 to 18.

The elements of each group have the same number of electrons in their last atomic shell, which is why they have similar chemical properties, because the chemical properties of chemical elements are strongly related to the electrons located in the last atomic shell.

That is, in a group, the chemical properties are very similar, because all the elements of the group have the same number of electrons in their last or last shells.

A barium atom would be expected to contain 2 electrons in its outer energy level.

how does the concentration of sodium thiosulphate affect the rate of reaction in between hydrochloric acid and sodium thiosulphate​

Answers

Answer: C

Explanation:

I know because i did it.

36.0 g of Be contains how many moles?

Answers

Answer:

Explanation:

4

1. A dry, empty bottle is placed in an ice bath. After the air inside the bottle is cooled off, a balloon is placed
over the opening. The bottle with the balloon is then placed in very hot water and the balloon inflated. Why
did the balloon inflate?

Answers

Answer:

hot air rises and expanded the balloon

Explanation:

thats it.

The hot air rises and expanded the ballon. This is as the air in the bottle cools down, the molecules of the air slow down and take up less space because they move closer together. The air then moves out of the balloon and back into the bottle, causing the balloon to deflate.

3. A sample of neon gas has a volume of 1.2 L at 28.5°C. What will the volume be at 125°C it the
pressure remains constant?

Answers

Answer:

1.58L

Explanation:

Given parameters:

Initial volume  = 1.2L

Initial temperature  = 28.5°C  = 28.5 + 273  = 301.5K

Final temperature  = 125°C  = 125 + 273  = 398K

Unknown:

New volume  = ?

Solution:

Volume and temperature relationship is resolved using the Charles's law.

The law states that "the volume of a fixed mass of a gas varies directly as its absolute temperature if the the pressure is constant".

So;

       [tex]\frac{V1}{T1}[/tex]    = [tex]\frac{V2}{T2}[/tex]  

V1 is the initial volume

T1 is the initial temperature

V2 is the new volume

T2 is the new temperature

             [tex]\frac{1.2}{301.5}[/tex]    = [tex]\frac{V2}{398}[/tex]    

              301.5V2  = 477.6

                       V2  = 1.58L

How many gallons of water would be in a container that is 256 millimeters X 20 inches X.045 meter.

Answers

About 69.62 gallons

3. All the deer in Horry County represent which of the following?

species
biome
population
community

Answers

Answer:

community

Explanation:

Answer:

The correct answer is population. I took the test and got it right.

How does adaption allow mice with the mutation to survive better in some areas

Answers

Answer: Mutations can cause instant adaptations, while natural selection is the process by which adaptations occurs over a series of generations. Adaptations are changes or processes of changes by which an organism or species becomes better suited for its environment. A mutation is an alteration of the DNA sequence.

Base changes phenolphthalein to pink it is true or false​

Answers

Answer:

It’s false

Explanation:

it could be true if the question mentioned alkaline solution

Answer:

True

Explanation:

Phenolphthalein is colorless in the presence of an acid and turns pink in the presence of a base.

Consider the double replacement reaction given below: HgNO3(aq) + KBr(aq) → HgBr (??) + KNO3(??)The state of matter for HgBr would be

Answers

Answer: The state of maater for HgBr is solid.

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.  

A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.  

The balanced chemical equation is:

[tex]HgNO_3(aq)+KBr(aq)\rightarrow HgBr(s)+KNO_3(aq)[/tex]

Other Questions
In its income statement for the year ended December 31, 2017, Darren Company reported the following condensed data. Salaries and wages expense $465,000 Loss on disposal of plant assets $83,500Cost of goods sold 987,000 Sales revenue 2,210,000Interest expense 71,000 Income tax expense 25,000Interest revenue 65,000 Sales discounts 160,000Depreciation expense 310,000 Utilities expense 110,000Instructions (a) Prepare a multi-step income statement. (b) Calculate the profit margin and gross profit rate. (c ) In 2016, Darren had a profit margin of 5%. Is the decline in 2017 a cause for concern? (Ignore income tax effects.) NOTE: Enter a number in cells requesting a value; enter either a number or a formula in cells with a "?" . (a) DARREN COMPANY Income Statement For the Year Ended December 31, 2017 Sales Sales revenue $2,210,000 Less: Sales discounts $160,000 Net Sales $2,050,000 Cost of goods sold $987,000 Gross profit $1,063,000 Operating expenses Salaries and wages expense $465,000 Depreciation expense $310,000 Utilities expense $110,000 Total operating expenses $885,000 Income from operations $178,000 Other revenues and gains Interest revenue $65,000 Other expenses and losses Loss on disposal of plant assets 83,500 Interest expense 71,000 154,500 Income before income taxes 88,500 Income tax expense 25,000 28% Net income $63,500 (b) Profit margin Net income $63,500 Net Sales 2,050,000 3.10% Gross profit rate Gross profit $1,063,000 Net sales $2,050,000 51.9% After you have completed E5-8 , consider the following additional question. 1. Assume that cost of goods changed to $1,015,000 and that the income tax rate is 28%. What impact does this change have on the multi-step income statement and the profitability ratios? PLZZZ!! 2-3 Sentences Describe Ottoman's rise and fall of power there is a college student who wants to buy apples from the local store. the store generally sells about 5 apples for every 2 coustomers they serve. About how many apples will they sell in 6 hours if they serve 10 coustomers every hour? Question 1: Summarize kit Carsons life Question 2: Explain how fur companies organized the trappersYou dont have to answer both Which statement is true?? 35 is 29% of what number Can someone please help me out? (11 + 5) - 7(2 - 1) - 4show work How did nationalism help lead to war in Europe? (5 sentences minimum.) how many turning points will a quartic fumction with four real zeros have? The value of the ratio y/x of two proportional quantities x and y is called..either constant of proportionality, ratio, unit rate, proportion, rate, or proportional relationship Find the measure of each angle indicated. Show work. Identify the primary factor related to fossils, according to continental drift theory.A) The age of the fossils were similar across continents.B) The fossils obtained across continents were of different ages.C) Wegener was unable to get any fossil evidence across continents.D) Wegener could locate fossils only in the continental boundaries that were matching each other. Describe how the von Thunen model isused to explain patterns of agriculturalproduction at various scales. How do eyes keep the body healthy?(please help) Batch Co. employs knowledge workers and is finding that its employees are retiring closer to age 75 than to age 65. As a result, they recently amended their defined benefit pension plan such that benefits will begin at age 72, with certain exceptions for those employees demonstrating an earlier need, instead of at age 60. Batch Co. has been able to measure the actuarial present value of this amendment, which is the change in the projected benefit obligation (PBO) that results from the change. How will this affect pension expense in current and future periods? All of the energy comes from the sun but ______________ capture this energy.(Copy pasted)Please answer An investor is in the 33 percent tax bracket and pays long-term capital gains taxes of 15 percent. What are the taxes owed (or saved in the case of losses) in the current tax year for each of the following situations? a) Net short-term capital gains of $3,000; net long-term capital gains of $4,000 b) Net short-term capital gains of $3,000; net long-term capital losses of $4,000 c) Net short-term capital losses of $3,000; net long-term capital gains of $4,000 d) Net short-term capital gains of $3,000; net long-term capital losses of $2,000 e) Net short-term capital losses of $4,000; net long-term capital gains of $3,000 f) Net short-term capital losses of $1,000; net long-term capital losses of $1,500 g) Net short-term capital losses of $3,000; net long-term capital losses of $2,000 The substance produced in anaerobic respiration is changed back to glucose.Where does this process happen? Tick one box. lungsstomachbrainliver Anyone know the correct answer?!