mttcreviewtest4

mttcreviewtest4 - MTTC Chemistry Review Test 4 Gases Name...

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MTTC Chemistry Review Test 4: Gases Name MDL TIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The thermal decomposition of potassium chlorate can be used to produce oxygen in the laboratory. 2KCl0 3 (s) ~ 2KCl (s) + 3O2 (g) What volume (L) of 02 gas at 25°C and 1.00 atm pressure is produced by the decomposition of 7.5 g of KClO 3 (s)? A) 4.5 B) 3.7 C) 11 0) 2.2 E) 7.5 2) The molecular weight of a gas that has a density of 5.75 g/L at STP is A) 129 B) 3.90 C) 578 0) 141 g/mol. E) 1.73 x 10 -3 3) Which one of the following is a valid statement of Avogadro's law? A) PV = constant B) P/ T = constant C) V/ T =constant 0) V = constant x P E) V = constant x n 4) Arrange the following gases in order of increasing average molecular speed at 25°C. Cl2, O 2 , F 2 , N 2 A) C1 2 < 0 2 < F 2 < N2 B) Cl 2 < F 2 < N 2 < 0 2 C) N 2 < F 2 < Cl 2 < O 2 D) Cl 2 < F 2 < O 2 < N2 E) F 2 < 0 2 < N 2 < Cl 2 5) A sample of H 2 gas (12.28 g) occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies
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mttcreviewtest4 - MTTC Chemistry Review Test 4 Gases Name...

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