Describing Chemical Reactions

Question 1

Sulfurous acid, H2SO3, breaks down into water (H2O) and sulfur dioxide (SO2).If only one molecule of sulfurous acid was involved in a chemical reaction, how many sulfur (S) atoms would be in the products?

Revolt · Accepted Answer

1 atom of sulfur

Question 2

Use the chemical equation to find the answers.

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✔ 3; Identify how many oxygen atoms are in the product.: 3; Identify how many oxygen atoms are in the reactant.: 3

Question 3

12✔ 3

Revolt · Accepted Answer

✔ 3

Question 4

Use the chemical equation to find the answers.

Revolt · Accepted Answer

✔ 8; Identify how many oxygen atoms are in the product.: 8; Identify how many oxygen atoms are in the reactant.: 8

Question 5

42✔ 8

Revolt · Accepted Answer

✔ 8

Question 6

When sugar is burned, water vapor and carbon dioxide are produced.

Revolt · Accepted Answer

Sugar has hydrogen atoms.: 22; Sugar has oxygen atoms.: 11

Question 7

1112✔ 222435

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✔ 22

Question 8

✔ 1112222435

Revolt · Accepted Answer

✔ 11

Question 9

Calcium carbonate can break down to form calcium oxide and carbon dioxide.CaCO3 → CaO + CO2The oxygen atoms on the product side are

Revolt · Accepted Answer

balanced because the total number of oxygen atoms is 3.

Question 10

When sugar is burned, water vapor and carbon dioxide are produced.

Revolt · Accepted Answer

✔ 12; Sugar has carbon atoms.: 12; Sugar has hydrogen atoms.: 22; Sugar has oxygen atoms.: 11

Describing Chemical Reactions Answers

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