Which of the following samples has the largest mass, in grams?
A) 6 moles of CN
B) 7 moles of H2O
C) 8 moles of H2
D) 5 moles of CO2
Correct answer is : (D) 5 moles of CO2
Explanation
Compound | Given moles (mol) | molar mass (g/mol) | Mass (g) |
CN | 6 | 26.0 | 156 |
H2O | 7 | 18.0 | 126 |
H2 | 8 | 2.0 | 16 |
CO2 | 5 | 44.0 | 220 |
mass of compound = (moles of compound) * (molar mass of compound)
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