Question

a) Calculate the mass in 3 moles of CCl4?​

Answer 1

Explanation:

• atomic mass of ccl4 is 152 unit
• so one mole of ccl4 contains 152 grams
• it implies that 3 moles of ccl4 contains 152 * 3 grams.
• it is equal to 456. grams

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Answer 2

Molecular mass of carbon = 12g/mol
Molecular mass of chlorine =35.5g/mol

For 1 mole of ccl4 , the molar mass is 12+ (35.5)4 = 12 + 142=154g/mol
For 3 moles of ccl4 the molar mass is (154)3 =462g/mol