Consider the balanced reaction: Zn(s)+ 2 HCl(aq)$\rightarrow$ ZnCl2(aq)+ H2(g). What volume of H2(g)at STP can be generated when 134 g of zinc reacts?

A) 2.05 L B) 45.9 L C) 5.98 L D) 3.00 × 103 L A) 2.05 L B) 45.9 L C) 5.98 L D) 3.00 × 103 L

The physical change indicated below represents the _____ of ethanol (C2H5OH). C2H5OH(g)$\rightarrow$C2H5OH(l)

The answer of The physical change indicated below represents the...

Exam 7: Gases, Liquids, and Solids

Air pressure at the bottom of Death Valley, at 282 ft below sea level, is 776 mm Hg. What are the partial pressures of O₂ and N₂, which compose 21% and 78% of the atmosphere, respectively?

(Multiple Choice)

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Question 21

The type(s)of intermolecular forces exhibited by methane molecules, CH₄, is/are _____.

(Essay)

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Question 22

London dispersion forces are also referred to as van der Waals forces.

(True/False)

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Question 23

When the pressure and temperature are held constant, the volume of a gas is inversely proportional to the number of moles present.

(True/False)

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Question 24

STP is defined as a pressure of exactly one atmosphere and a temperature of 25 °C.

(True/False)

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Question 25

London dispersion forces are the strongest type of intermolecular forces.

(True/False)

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Question 26

Atmospheric pressure in interstellar space is approximately 1 × 10^-17 torr at a temperature of -173 °C. How many gas molecules are present in 25, 000 L of interstellar space (about the volume of a bedroom)?

(Multiple Choice)

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Question 27

A sample of gas contains four gases (He, Ne, Ar, and Xe)with the following partial pressures: He (43 mm Hg), Ar (835 mm Hg), and Xe (111 mm Hg). If the total pressure in the container is 1355 mm Hg, what is the partial pressure of Ne in the sample?

(Multiple Choice)

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Question 28

The density of a sample of gas increases if the temperature is increased but the pressure is held constant.

(True/False)

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Question 29

When 88.4 g of hydrogen gas is put in a 25.8-L container at 300. K, the pressure will be 83.7 atm.

(True/False)

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Question 30

_____ is the pressure exerted by gas molecules in equilibrium with the liquid phase.

(Short Answer)

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Question 31

Consider the balanced reaction: Zn(s)+ 2 HCl(aq) $\rightarrow$ ZnCl₂(aq)+ H₂(g). What volume of H₂(g)at STP can be generated when 134 g of zinc reacts?

(Multiple Choice)

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Question 32

The physical change indicated below represents the _____ of ethanol (C₂H₅OH). C₂H₅OH(g) $\rightarrow$ C₂H₅OH(l)

(Short Answer)

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Question 33

The temperature of a 0.750-L gas sample at 25 °C and 2.00 atm is changed to 250 °C. What is the final pressure of the system, at constant volume?

(Multiple Choice)

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Question 34

A 54.2 L sample of gas at 115 K is heated to 345 K, at constant pressure. What volume does the gas now occupy?

(Multiple Choice)

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Question 35

Charles's law can be used to explain the dangerous condition for scuba divers called "the bends", which is caused by the formation of nitrogen gas bubbles in the bloodstream.

(True/False)

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Question 36

Gay-Lussac's law relates the _____ and temperature of a gas sample at constant volume.

(Short Answer)

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Question 37

What is the volume of 62.3 g of nitrogen gas at STP?

(Multiple Choice)

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Question 38

Condensation is the opposite of sublimation.

(True/False)

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Question 39

The higher the vapor pressure of a compound, the higher the boiling point of the compound.

(True/False)

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Question 40

Showing 21 - 40 of 79

Exam 7: Gases, Liquids, and Solids

Air pressure at the bottom of Death Valley, at 282 ft below sea level, is 776 mm Hg. What are the partial pressures of O2 and N2, which compose 21% and 78% of the atmosphere, respectively?

The type(s)of intermolecular forces exhibited by methane molecules, CH4, is/are _____.

London dispersion forces are also referred to as van der Waals forces.

When the pressure and temperature are held constant, the volume of a gas is inversely proportional to the number of moles present.

STP is defined as a pressure of exactly one atmosphere and a temperature of 25 °C.

London dispersion forces are the strongest type of intermolecular forces.

Atmospheric pressure in interstellar space is approximately 1 × 10-17 torr at a temperature of -173 °C. How many gas molecules are present in 25, 000 L of interstellar space (about the volume of a bedroom)?

A sample of gas contains four gases (He, Ne, Ar, and Xe)with the following partial pressures: He (43 mm Hg), Ar (835 mm Hg), and Xe (111 mm Hg). If the total pressure in the container is 1355 mm Hg, what is the partial pressure of Ne in the sample?

The density of a sample of gas increases if the temperature is increased but the pressure is held constant.

When 88.4 g of hydrogen gas is put in a 25.8-L container at 300. K, the pressure will be 83.7 atm.

_____ is the pressure exerted by gas molecules in equilibrium with the liquid phase.

Consider the balanced reaction: Zn(s)+ 2 HCl(aq) →\rightarrow→ ZnCl2(aq)+ H2(g). What volume of H2(g)at STP can be generated when 134 g of zinc reacts?

The physical change indicated below represents the _____ of ethanol (C2H5OH). C2H5OH(g) →\rightarrow→ C2H5OH(l)

The temperature of a 0.750-L gas sample at 25 °C and 2.00 atm is changed to 250 °C. What is the final pressure of the system, at constant volume?

A 54.2 L sample of gas at 115 K is heated to 345 K, at constant pressure. What volume does the gas now occupy?

Charles's law can be used to explain the dangerous condition for scuba divers called "the bends", which is caused by the formation of nitrogen gas bubbles in the bloodstream.

Gay-Lussac's law relates the _____ and temperature of a gas sample at constant volume.

What is the volume of 62.3 g of nitrogen gas at STP?

Condensation is the opposite of sublimation.

The higher the vapor pressure of a compound, the higher the boiling point of the compound.

Matter and Measurement

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes, Reaction Rates, and Equilibrium

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen, Halogen, or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids, Esters, and Amides

Amines and Neurotransmitters

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Digestion and the Conversion of Food Into Energy

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Air pressure at the bottom of Death Valley, at 282 ft below sea level, is 776 mm Hg. What are the partial pressures of O₂ and N₂, which compose 21% and 78% of the atmosphere, respectively?

The type(s)of intermolecular forces exhibited by methane molecules, CH₄, is/are _____.

Atmospheric pressure in interstellar space is approximately 1 × 10^-17 torr at a temperature of -173 °C. How many gas molecules are present in 25, 000 L of interstellar space (about the volume of a bedroom)?

Consider the balanced reaction: Zn(s)+ 2 HCl(aq) $\rightarrow$ ZnCl₂(aq)+ H₂(g). What volume of H₂(g)at STP can be generated when 134 g of zinc reacts?

The physical change indicated below represents the _____ of ethanol (C₂H₅OH). C₂H₅OH(g) $\rightarrow$ C₂H₅OH(l)