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

so what is the problem with your lab report and whats the subject of the lab report? i will you

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them