Answer:
.9875 moles O2
Explanation:
First you need to balance the formula
2H2+O2⟶ 2H2O
Now you'll use the formula for stoichiometry
moles of known/1 * coefficient of unknown/coefficient of known= unknown moles
fill it in with the information given
1.975/1 * coefficient of O2 (1) / coefficient of H2 (2)
1.975 * 1/2= .9875 moles of O2
sig figs are already being used
Answer:
0.9875 moles of O₂
Explanation:
The reaction for production of water is:
2H₂ + O₂ → 2H₂O
By stoichiometry, 2 moles of hydrogen need 1 mol of oxygen to react.
Then, we can make the following rule of three:
If 2 moles of H₂ need 1 mol of O₂ to react
Then, 1.975 moles of H₂ will need ( 1.975 . 1) /2 = 0.9875 moles of O₂
