05/17/22
The molar mass of Fe2O3 is 159.69 g/mol. A student measured the mass of a piece of Fe2O3 and found it to be 18.54 grams. This is ___ moles of Fe2O3. Use 4 significant figures.
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05/16/22
Determine the percent sodium by mass in the original mixture.
Zinc and sodium metal each react with sulfuric acid according to the following equations. Zn(s)+H2SO4(aq)⟶ZnSO4(aq)+H2(g)2Na(s)+H2SO4(aq)⟶Na2SO4(aq)+H2(g)A 26.16 g mixture of zinc and sodium is...
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