NAME QUIZ 10 CHAPTER 6 I. Calculate the total number of moles of oxygen containi
ID: 560710 • Letter: N
Question
NAME QUIZ 10 CHAPTER 6 I. Calculate the total number of moles of oxygen containing products that can be formed by the decomposition of 1.75 moles of ammonium nitrate, NH4NO3, according to the balanced chemical equation, 2 NH4NO3 2N2 + 02 + 41120 a. 7.00 moles b. 6.13 moles c. 5.00 moles d. 4.38 moles 2. For the reaction 2 H2 + O2 2H2O + 572.4 kJ which of the following IS NOT TRUE? a. The reaction is exothermic b. 572.4 kJ of heat are liberated for each mole of water formed c. Two moles of hydrogen react with one mole of oxygen d. 572.4 kJ of heat are liberated for each two moles of hydrogen reacted. 3. Automotive airbags inflate when sodium azide, NaN3, rapidly decomposes to its constituent elements according to the chemical equation, 2 NaN 3 2 Na + 3 N2. How many grams of nitrogen are produced when 1000. milligrams of sodium azide decomposes? a. 0.01538 grams b. 0.2308 grams c. 0.3538 grams d. 0.6462 gramsExplanation / Answer
1)
from reaction,
2 mol of NH4NO3 forma 1 mol of O2 and 4 moles of H2O
So,
2 mol of NH4NO3 forma 5 mol of oxygen containing products
so,
1.75 moles will form (5*1.75/2) = 4.38 moles of oxygen containing products
Answer: d
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