the molar mass of hydrogen (h₂) is 2.02 g/mol. a sample contains 4.00 mol of h₂. what is the mass, in grams…

the molar mass of hydrogen (h₂) is 2.02 g/mol. a sample contains 4.00 mol of h₂. what is the mass, in grams, of this sample?\n\n1.98 grams\n2.02 grams\n4.00 grams\n8.08 grams

the molar mass of hydrogen (h₂) is 2.02 g/mol. a sample contains 4.00 mol of h₂. what is the mass, in grams, of this sample?\n\n1.98 grams\n2.02 grams\n4.00 grams\n8.08 grams

Answer

Explanation:

Step1: Recall mass - mole relationship

The formula is $m = n\times M$, where $m$ is mass, $n$ is amount in moles, and $M$ is molar mass.

Step2: Substitute given values

Given $n = 4.00\ mol$ and $M=2.02\ g/mol$. So $m=4.00\ mol\times2.02\ g/mol$.

Step3: Calculate the mass

$m = 4.00\times2.02=8.08\ g$.

Answer:

D. 8.08 grams