Given: 6.022×10²³ molecule of Calcium carbonate.

Solution:

• 1 mole of calcium carbonate has 6.022×10²³ molecules.
• The mass of calcium is 40 grams.
• The mass of oxygen is 16 grams.
• The mass is of carbon atoms is 12 grams.
• Thus the mass of calcium carbonate: 40+12+16×3=100

>>>The mass of calcium carbonate is 100 grams.

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