The molar mass of hydrogen open paren cap h sub 2 close paren is 2 point 0 2 g over mol A sample contains 4 point 0 0 mol of cap h sub 2 What is the mass, in grams, of this sample?
Answer
A
1 point 9 8 grams
B
2 point 0 2 grams
C
8 point 0 8 grams
D
4 point 0 0 grams
Explanation
Multiply the amount in moles by the molar mass: 4.00 mol × 2.02 g/mol = 8.08 g. The sample’s mass is 8.08 grams, choice C.
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