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2 years ago

Which statement best describes balancing equations and the law of conservation of mass?

Chemistry

2 answers:

max2010maxim [7]2 years ago

6 0

Answer:

The number of atoms is the same in the reactants and in the products, and the total mass is the same in the reactants and in

the products

Explanation:

For an equation to termed balance, the number of atoms of elements in the reactants must be equal to the number of atoms of the same element in the product.

The law of conservation of mass states that matter can neither be created nor destroyed during a chemical reaction but changes from one form to another. An unbalanced equation simply means that matter have been created or destroyed. This implies that balancing equation supports the laws of conservation of mass

hodyreva [135]2 years ago

6 0

Answer:

The answer is B

Explanation:

Just took the test

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Which particle changes to create an isotope of an atom? <br> A.proton<br> B.neutron<br> C.electron

Dovator [93]

Answer:

Explanation:

proton

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2 years ago

Which letter shows the most direct sunlight?

timama [110]

Answer:c

Explanation:because the light is hitting the Earth straight on without a slant or without all the light, it is the most direct

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2 years ago

The polymer formed from the monomer ch2=ch–cn is select one:

podryga [215]

Answer:
None of the given options show polymer made up of H₂C=CH-CN (Acrylonitrile).

Explanation:
Acrylonitrile (H₂C=CH-CN) which is a monomer on self linkage results in a large chain polymer called as Polyacrylonitrile.
The structure of Polyacrylonitrile is as follow,

--(H₂C-CHCN-)n--

Where n shows the number of Acrylonitrile units joined together in the formation of Polyacrylonitrile. This polymerization reaction can take place by different mechanisms including free radical mechanism, acid catalyzed addition or base catalyzed addition reaction.

The polymerization is shown below,

5 0

2 years ago

How many kilometers are there in 4.5 x 10^3 meters ?

Len [333]

1 meter = .001 kilometers so 4.5 x 10^3 = 4500 so .001 x 4500 = 4.5 kilo

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3 years ago

Question 12 of 25

NISA [10]

Answer:

B. Equal amounts of all gases have the same volume at the same

conditions

Explanation:

Amedo Avogadro found the relationship between volume of a gas and the number of molecules contained in the volume.

The law states that "equal volumes of all gases at the same temperature and pressure contains equal number of molecules or moles".

The law describes the behavior of gases when involve in chemical reactions. It enables one to change over at will in any statement about gases from volumes to molecules and vice versa.

So, the right option is B which implies that equal amounts of all gases have the same volume at the same conditions.

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2 years ago