Author Question: Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + ... (Read 103 times)

lidoalex · **on:** Jul 8, 2021

Question 1

Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements:

2 NaN₃(s) → 2 Na(s) + 3 N₂(g)

How many grams of sodium azide are required to produce 33.0 g of nitrogen?
◦ 1.77 g
◦ 0.785 g
◦ 76.6 g
◦ 51.1 g
◦ 114.9 g

Question 2

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide:

CaO(s) + H₂O(l) → Ca(OH)₂(s)

A 4.50 g sample of CaO is reacted with 4.34 g of H₂O. How many grams of water remain after the reaction is complete?
◦ 0.00
◦ 0.00892
◦ 2.90
◦ 1.04
◦ 0.161

Tabitha_2016 · **Reply #1 on:** Jul 8, 2021

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