Chemical principles, reactions and calculations
Model answer and review guidance
2
88/44 = 2.
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Chemical principles, reactions and calculations
Model answer and review guidance
0.2
0.3/1.5 = 0.2.
Chemical principles, reactions and calculations
Model answer and review guidance
4
−log10(10^-4)=4.
Chemical principles, reactions and calculations
Model answer and review guidance
One mole O2 reacts with 2 mol H2, so oxygen limits the reaction and 1 mol H2 remains.
Use coefficients, not an equal-moles assumption.
Chemical principles, reactions and calculations
Model answer and review guidance
Gas volume changes with those conditions even for the same amount.
State conditions before using a molar volume.
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