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Identify 3 statements that are true about potassium carbonate by checking the box in front of each true statement.

a. The molar mass of potassium carbonate is 99.1 g/mol .

b. The percent by mass of carbon (%C) in potassium carbonate is 8.69 % .

c.The percent by mass of oxygen (% O) in potassium carbonate is greater than the percent by mass of potassium (% K) in potassium carbonate.

d. There are 27.6 g of potassium carbonate in 0.200 mol of potassium carbonate.

e. Different samples of pure potassium carbonate will always contain a different percent by mass of carbon (% C).

f. A substance that is 56.6% potassium by mass could be pure potassium carbonate.

Answer :

Final answer:

The molar mass of potassium carbonate is 99.1 g/mol, the percent by mass of carbon in potassium carbonate is 8.69%, and the percent by mass of oxygen in potassium carbonate is greater than the percent by mass of potassium.

Explanation:

The three statements that are true about potassium carbonate are:

  1. The molar mass of potassium carbonate is 99.1 g/mol.
  2. The percent by mass of carbon (%C) in potassium carbonate is 8.69%.
  3. The percent by mass of oxygen (%O) in potassium carbonate is greater than the percent by mass of potassium (%K) in potassium carbonate.

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