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? 1.98 grams 2.02 grams 4.00 grams 8.08 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? 1.98 grams 2.02 grams 4.00 grams 8.08 grams

Answer

Explanation:

Step1: Recall mass - mole formula

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

Step2: Substitute given values

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

Step3: Calculate the mass

$m = 8.08\ g$.

Answer:

D. 8.08 grams