How many grams of water are produced when 8.25 mol hydrogen reacts with hydrogen? H2 + O2 --> H2O

148.7grams

Explanation:

We need to balance the equation first

2H2 + O2 --> 2H2O

now we set up a mole ratio where we know the mole ratio of hydrogen is 2 and the mole ratio of water is 2 as well. SInce the moles are the same, nH2O = nH2

now we can calculate mass

(m is mass of water, n is moles of water, M is molecular mass of water)

molecular mass of H2O can be found by adding atmoic mass of 2 hydrogen and one oxygen (1.01+1.01+16.00)

n = m/M rearrange to m = n*M

m = 8.25mol*18.02mol

m = 148.665g

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.