Answer to Question #169098 in General Chemistry for Janiah Leslie

Question #169098

how many grams of O2 must you have to produce 14.6 grams of H2O answwr


1
Expert's answer
2021-03-08T07:06:18-0500

The equation for the reaction

O2 + 2H2 "\\to" 2H2O


Moles of water used "=\\dfrac{mass}{RMM} = \\dfrac{14.6g}{18.01528g\/mol}=0.81042mol"


Mole ratio of O2 : H2O = 1:2


Moles of O2"=\\dfrac{1}{2}x0.81042 = 0.4052mol"


Mass of O2 = moles x MM

= 0.4052mol x 31.998 =12.966g



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