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VashaNatasha [74]
3 years ago
11

Law of conservation of mass to explain why a chemical equation must be balanced?

Chemistry
2 answers:
SOVA2 [1]3 years ago
7 0
Chemical equations must always balance due to the principles outlined in The Law Of Conservation of Matter. This scientific law states that matter cannot be created out of nothing nor can it be destroyed.
MA_775_DIABLO [31]3 years ago
7 0

<u>Answer:</u>

<em>Law of conservation of mass state that mass can neither be created nor be destroyed.  Also chemical reaction of the sum is outlined in The Law Of Conservation of Matter.</em>

<u>Explanation:</u>

In a chemical reaction the sum of the masses of the products will be equal to the sum of the masses of the reactants. <em>Thus a chemical reaction conserves the total mass.</em> For this law to be valid the system where the reactions take place should be closed.

It has to be properly ensured that there is no transfer of energy or mass between the system and its outer environment. <em>If that happens the sum of masses of products differs from that of the reactants due to the gain or loss of matter to surroundings.  </em>

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How much silver can be produced from 125g of Ag2S
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Answer:

108.9g of Silver can be produced from 125g of Ag2S

Explanation:

The compound Ag2S shows that two atoms of Silver Ag, combined with an atom of Sulphur S to form Ag2S. We can as well say the combination ration of Silver to Sulphur is 2:1

•Now we need to calculate the molecular weight of this compound by summing up the molar masses of each element in the compound.

•Molar mass of Silver Ag= 107.9g/mol

•Molar mass of Sulphur S= 32g/mol

•Molecular weight of Ag2S= (2×107.9g/mol) + 32g/mol

•Molecular weight of Ag2S= 215.8g/mol + 32g/mol= 247.8g/mol

•From our calculations, we know that 215.8g/mol of Ag is present in 247.8g/mol of Ag2S

If 247.8g Ag2S produced 215.8g Ag

125g Ag2S will produce xg Ag

cross multiplying we have

xg= 215.8g × 125g / 247.8g

xg= 26975g/247.8

xg= 108.85g

Therefore, 108.9g of Silver can be produced from 125g of Ag2S

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Which of the following would dissolve in water?<br> CCl4<br> LiCl<br> CH4<br> PCl6
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Explanation:

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