Lesson 2 Stoichiometry -mass to mass

Science

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3 questions

mohamedhashem668

•over 4 years ago

Question 1

Multiple Choice

10 points

One of the reactions used to inflate automobile air bags involves sodium azide (NaN3): 2NaN3(s) → 2Na(s) + 3N2(g). Determine the mass of N2 produced from the decomposition of 100 grams of NaN3 Na=23 , N=14

A.64.64 gN2

B.65 g N2

C.34 g N2

D.117 g N2

Question 2

Multiple Choice

10 points

CHALLENGE In the formation of acid rain, sulfur dioxide (SO2) reacts with oxygen and water in the air to form sulfuric acid (H2SO4). What is the correct balanced chemical equation for the reaction.

A.3SO2(g) + O2(g) + 2H2O(l) = 4H2SO4(aq)

B.2SO2(g) + O2(g) + 2H2O(l) = 2H2SO4(aq)

C.3SO2(g) + 2O2(g) + 2H2O(l) = 2H2SO4(aq)

D.2SO2(g) + O2(g) + 4H2O(l) = 6H2SO4(aq)

Question 3

Multiple Choice

10 points

CHALLENGE In the formation of acid rain, sulfur dioxide (SO2) reacts with oxygen and water in the air to form sulfuric acid (H2SO4). 2SO2(g) + O2(g) + 2H2O(l) = 2H2SO4(aq) In the given balanced chemical equation If 2.50 g of SO2 reacts with excess oxygen and water, how much H2SO4, in grams, is produced? H=1 , S=32.07 , O=16

A.12.5 g H2SO4

B.4.78g H2SO4

C.3.83 g H2SO4

D.15 g H2SO4