How many grams of hydrogen are contained in 2.00 mol of c6h7n

- 14.0 moles of hydrogen present in 2.00 moles of .

Solution:- We have been given with 2.00 moles of and asked to calculate the grams of hydrogen present in it. It's a two step conversion problem. In first step we convert the moles of the compound to moles of hydrogen as one mol of the compound contains 7 moles of hydrogen. In next step the moles are converted to grams on multiplying the moles by atomic mass of H. The calculations are shown as:

= 14.0 g H

So, there are 14.0 g of hydrogen in 2.00 moles of   .

1.solid

2.carbon dioxide

3.helium