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sodium azide (65.01 g/mol) energetically decomposes to give sodium metal and nitrogen gas. according to the...

sodium azide (65.01 g/mol) energetically decomposes to give sodium metal and nitrogen gas. according to the eguation : 2NaN3 (s)\rightarrow 2 Na (s) + 3 N2 (g) . what the mass of sodium azide is needed to generate 20.0L of nitrogen gas (p= 1.25 g/L)?

Solutions

Expert Solution

mass of N2 gas = volume x density

                         = 20.0 x 1.25

                          = 25 g

2 NaN3 ---------------------> 2 Na + 3 N2

130.02 g                                         84g

?                                                    25 g

130.02 g NaN3 --------------------> 84 g N2

x g NaN3 ------------------------> 25 g N2

x = 130.02 x 25 / 84

x = 38.7 g

mass of NaN3 = 38.7 g

queen_honey_blossom answered 1 year ago
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