One method used to inflate air bags in cars is to use nitrogen produced chemically from the decomposition ofsodium azide. The sodium formed reacts with potassium nitrate to give more nitrogen.2 NaN3(s) 2 Na(s) + 3 N2(g)10 Na(s) + 2 KNO3(s) K2O(s) + 5 Na2O(s) + N2(g)a) In what ratio (by mass) must the sodium azide and potassium nitrate be mixed in order that no metallic sodiumremains after the reaction?b) Calculate the total mass of the solid mixture needed to inflate a 60.0 dm3air bag at room temperature andatmospheric pressure.
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for a the answer is 1:3.11 confused a to how, if you get a chance could you look over??
One method used to inflate air bags in cars is to use nitrogen produced chemically from the decomposition ofsodium azide. The sodium formed reacts with potassium nitrate to give more nitrogen.2 NaN3(s) 2 Na(s) + 3 N2(g)10 Na(s) + 2 KNO3(s) K2O(s) + 5 Na2O(s) + N2(g)a) In what ratio (by mass) must the sodium azide and potassium nitrate be mixed in order that no metallic sodiumremains after the reaction?b) Calculate the total mass of the solid mixture needed to inflate a 60.0 dm3air bag at room temperature andatmospheric pressure.
(the squares are arrows)
for a the answer is 1:3.11 confused a to how, if you get a chance could you look over??
Well if for every 2 moles of nan3 we make 2 moles of Na, and 10 moles of Na will react with 2 moles of KNO3 the ratio of moles will be 10:2 =5:1 (since 10 moles of nan3 will make 10 moles of na which will be converted by 2 moles of kno3). Then you just need to convert it to a mass ratio using the molar masses
Well if for every 2 moles of nan3 we make 2 moles of Na, and 10 moles of Na will react with 2 moles of KNO3 the ratio of moles will be 10:2 =5:1 (since 10 moles of nan3 will make 10 moles of na which will be converted by 2 moles of kno3). Then you just need to convert it to a mass ratio using the molar masses
i did that and got what i said above? think they forgot to times something by 10