# 1) N2 has a volume of 5.50 L at a pressure of 200 kPa and at a temperature

of 25ºC. What must the temperature be if the new volume is 10.0 L, but is a constant pressure? *

a) 370ºC

b) 269ºC

c) 154ºC

d) 32ºC

e) -109ºC

2) Assuming constant volume, the pressure of an ideal gas such as N2, increases with temperature because the *

a) volume of N atoms increases

b) density of the gas decreases

c) density of the gas increases

d) molecules of N2 move more rapidly

e) collisions are less elastic

3) An ideal gas has a volume of 1.00 L at STP. What will happen to the volume of the same gas if the pressure is doubled and the absolute temperature is tripled? *

a) 2.00 L

b) 0.667 L

c) 1.50 L

d) 6.0 L

e) 1.0 L unchanged

4) For a chemical analysis, 500 mL of a 0.480 mol/L KMnO4solution is to be prepared. Calculate the mass of KMnO4 (MM is 158 g/mol) crystals that will be dissolved to make this solution. *

a) 75.8 g

b) 56.9 g

c) 37.9 g

d) 1.52 g

e) 151.7 g

5) The concentration of an HCl acid solution is initially 6.0 mol/L. What would the concentration of a new solution be if 300. mL of the original HCl solution is diluted to 900. mL solution? *

a) 2.0 M

b) 1.8 M

c) 0.50 M

d) 1.5 M

e) 3.6 M

6) Given the equation 4A + 3B → 2C + 3D, you react 6 moles of A with 6 moles of B. Which of the following statements is true? *

a) A is the limiting reactant

b) B has a greater molar mass than A

c) A and B are in ideal stoichiometric proportions

d) B is the limiting reactant

e) A has a greater molar mass than B

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