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The reaction between 128.0 g of iron with 67.3 g of oxygen gas produced 183.0 g of iron(III) oxide. How much oxygen remained when the reaction was complete?
A medium-speed boat has a total diesel capacity of 660 kg. When 70 kg of fuel burns, 243 kg of oxygen gas is consumed. The combustion produces carbon dioxide, water, and some sulfur dioxide. What is the total mass of the three products formed after combustion?
Ammonia can be converted to nitric acid. One step in that process is the conversion of NH3 to NO:
4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g)
This reaction was studied by reacting 4.50 g of NH3 with 3.20 g of O2. After the reaction reached completion, 2.40 g of NO and 2.16 g of O2 were produced, and 3.14 g of NH3 remained. Show how is this consistent with the law of conservation of mass.
In a balanced chemical equation, which of the following must have the same values on both sides?
I. the molecules of each type on each side
II. the atoms of each type on each side
III. the mass on each side
