CHEM125 – REVIEW ACS IV

REVIEW ACS IV

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Question 1

What volume (in mL) of 12 M HCI solution is required to prepare exactly 500. mL of a 0.67 M HCI solution? chem125-acsiv - Fluff Butt Reviews

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Question 2

What is the molar mass of an ideal gas if a 0.800 g sample of this gas occupies a volume of 200. mL at 50.0 oC and 720. mm Hg? Select one: chem125-acsiv - Fluff Butt Reviews

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Question 3

Which set of temperature and pressure conditions will cause a gas to exhibit the LEAST deviation from ideal gas behavior? Select one: chem125-acsiv - Fluff Butt Reviews

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Question 4

What is the molarity of a solution made by dissolving 3.49 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.) chem125-acsiv - Fluff Butt Reviews

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Question 5

An open-ended mercury manometer is used to measure the pressure exerted by a trapped gas as shown in the figure. Atmospheric pressure is 750. mmHg. What is the pressure (in mmHg or torr) of the trapped gas if h =3 cm? chem125-acsiv - Fluff Butt Reviews

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Question 6

Select one: chem125-acsiv - Fluff Butt Reviews

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Question 7

Which substance meets the requirements: crsytalline solid; brittle; poor electrical conductor in the solid state; good conductor in liquid phase; melts at high temperature? Select one: chem125-acsiv - Fluff Butt Reviews

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Question 8

The boiling point of an impure compound is generally Select one: chem125-acsiv - Fluff Butt Reviews

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Question 9

Given the cooling curve of one gram of a pure liquid, the length of the line BC depends on Select one: chem125-acsiv - Fluff Butt Reviews

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Question 10

Starting at point A and ending at point F, which of the following processes requires the most energy? Select one: chem125-acsiv - Fluff Butt Reviews

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Question 11

Which phase has the largest specific heat? (Hint, how are the slope and specific heat related?) Select one: chem125-acsiv - Fluff Butt Reviews

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Question 12

Copper crystallizes in a face-centered cubic lattice. What is the mass of one unit cell? Report your answer in grams. Select one: chem125-acsiv - Fluff Butt Reviews

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Question 13

Metal M crystallizes in a face-centered cubic lattice. If the edge of the unit cell is 200 pm, what is the radius of a metal M atom (in pm)? Select one: chem125-acsiv - Fluff Butt Reviews

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Question 14

A 500. mL gas sample is collected over water at a pressure of 740 mmHg and 60 °C. What is the volume of the dry gas at STP? (STP = 1 atm and 0 °C.) Vapor pressure of water at 60. °C is 149 mmHg. Select one: chem125-acsiv - Fluff Butt Reviews

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Question 15

Which point corresponds to the critical temperature and pressure? Select one: chem125-acsiv - Fluff Butt Reviews

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Question 16

Starting at point A and lowering the pressure at constant temperature is best described by Select one: chem125-acsiv - Fluff Butt Reviews

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Question 17

Which of the following conditions are possible at point C? Select one: chem125-acsiv - Fluff Butt Reviews

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Question 18

Yikes! Looks like this one doesn’t have an answer. You’re on your own!

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Question 19

Which factor affects the vapor pressure of a liquid? Select one: chem125-acsiv - Fluff Butt Reviews

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Question 20

The graph shows how the vapor pressure of a liquid Changes with temperature. At 500 torr, what is the boiling temperature? Select one: chem125-acsiv - Fluff Butt Reviews

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Question 21

What is the vapor pressure of a solution with a benzene to octane molar ratio of 1:3 at 50 °C? At 50 °C, the vapor Pressure of pure benzene and octane are respectively 280 mmHg and 400 mmHg. Select one: chem125-acsiv - Fluff Butt Reviews

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Question 22

A particular solid is soft, a poor conductor of heat and electricity, and has a low melting point. Generally, such a solid is classified as Select one: chem125-acsiv - Fluff Butt Reviews

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Question 23

Which solution is the most concentrated. Select one: chem125-acsiv - Fluff Butt Reviews

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