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HW 2 Chp5 Item 11
Sodium reacts with oxygen to produce sodium oxide. 4Na(s) + O2(g)--> 2Na2O(s)
Part A:
How many grams of Na2O are produced when 88.9g of Na reacts?
Part B:
If you have 20.0g of Na, how many grams of O2 are required for thereaction?
Part C:
How many grams of O2 are needed in a reaction that produces 75.0gof Na2O?

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Elin Hessel
Elin HesselLv2
28 Sep 2019
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HW 2 Chp5 Item 13
Nitrogen dioxide and water react to produce nitric acid HNO3 andnitrogen monoxide.
3NO2(g) + H2O(l) --> @HNO3(aq) + NO(g)
Part A:
How many grams of H2O are required to react with 26.0g NO2?
Part B:
How many grams of NO are obtained from 15.9g NO2?
Part C:
How many grams of HNO3 are produced from 8.25g NO2?
HW 2 Chp5 Item 14
When the ore lead (ll) sulfide burns in oxygen, the products arelead (ll) oxide and sulfur dioxide.
Part A:
Balance the equation:
express the answer as a chemical equation. identify all of thephases in your answer
PbS(s) + O2(g) --> PbO(s) + SO2(g)
Part B:
How many grams of oxygen are required to react with 0.128 mole lead(ll) sulfide?
Part C:
How many grams of sulfur dioxide can be produced when 66.0glead(ll) sulfide react?
Part D:
How many grams of lead(ll) sulfide are used to produce 129glead(ll) oxide?

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