Laser_3

A sample of propane, a component of LP gas, has a volume of 35.3 L at 315 K and 922 torr. What is ...

A sample of propane, a component of LP gas, has a volume of 35.3 L at 315 K and 922 torr. What is ...

A sample of propane, a component of LP gas, has a volume of 35.3 L at 315 K and 922 torr. What is its volume at STP?(R = 0.08206 L • atm/K • mol, 1 atm = 760 torr)

▸ 25.2 L

▸ 30.6 L

▸ 33.6 L

▸ 37.1 L

▸ 49.2 L

nancy2457   7   1 Reply

traumajeff

A sample of nitrogen gas is confined to a 14.0-L container at 375 torr and 37.0C. How many moles of ...

A sample of nitrogen gas is confined to a 14.0-L container at 375 torr and 37.0C. How many moles of ...

[html]A sample of nitrogen gas is confined to a 14.0-L container at 375 torr and 37.0°C. How many moles of nitrogen are in the container?(R = 0.08206 L • atm/K • mol, 1 atm = 760 torr)

▸ 0.272 mol

▸ 2.27 mol

▸ 3.69 mol

▸ 206

nevermind11111   7   1 Reply

mooltipas

A sample of nitrogen gas has the temperature drop from 250.C to 150.C at constant pressure. What is ...

A sample of nitrogen gas has the temperature drop from 250.C to 150.C at constant pressure. What is ...

A sample of nitrogen gas has the temperature drop from 250.°C to 150.°C at constant pressure. What is the final volume if the initial volume is 310. mL?

▸ 0.186 L

▸ 0.251 L

▸ 0.383 L

▸ 0.410 L

▸ 0.517 L

makalisek   8   1 Reply

dangoon

A sample of nitrogen gas has a volume of 32.4 L at 20C. The gas is heated to 220C at constant ...

A sample of nitrogen gas has a volume of 32.4 L at 20C. The gas is heated to 220C at constant ...

A sample of nitrogen gas has a volume of 32.4 L at 20°C. The gas is heated to 220ºC at constant pressure. What is the final volume of the nitrogen gas?

▸ 2.94 L

▸ 19.3 L

▸ 32.4 L

▸ 54.5 L

▸ 356 L

thallium81   12   1 Reply

danterich

A sample of nitrogen gas at 298 K and 745 torr has a volume of 37.42 L. What volume will it occupy ...

A sample of nitrogen gas at 298 K and 745 torr has a volume of 37.42 L. What volume will it occupy ...

A sample of nitrogen gas at 298 K and 745 torr has a volume of 37.42 L. What volume will it occupy if the pressure is increased to 894 torr at constant temperature?

▸ 22.3 L

▸ 31.2 L

▸ 44.9 L

▸ 112 L

▸ 380 L

biokam   8   1 Reply

DNA_Helicase

A sample of N2 gas occupies 2.40 L at 20C. At what temperature will the N2 gas occupy a volume of ...

A sample of N2 gas occupies 2.40 L at 20C. At what temperature will the N2 gas occupy a volume of ...

A sample of N2 gas occupies 2.40 L at 20°C. At what temperature will the N2 gas occupy a volume of 4.80 L at constant pressure?

▸ 10°C

▸ 40°C

▸ 146°C

▸ 313°C

▸ 586°C

deroth   7   1 Reply

shalasha

A sample of hydrogen gas exerts a pressure of 466 torr in a container. What is this pressure in ...

A sample of hydrogen gas exerts a pressure of 466 torr in a container. What is this pressure in ...

A sample of hydrogen gas exerts a pressure of 466 torr in a container. What is this pressure in atmospheres? (1 atm = 1.01325 ×105 Pa = 760 torr)

▸ 0.217 atm

▸ 0.466 atm

▸ 0.613 atm

▸ 1.63 atm

▸ 4.60 atm

kaykay41   7   1 Reply

localbabe10

A sample of gas occupies 24.5 L at a pressure of 1.57 atm. What is the pressure if the volume is ...

A sample of gas occupies 24.5 L at a pressure of 1.57 atm. What is the pressure if the volume is ...

[html]A sample of gas occupies 24.5 L at a pressure of 1.57 atm. What is the pressure if the volume is increased to 48.3 L at constant temperature?

▸ 0.796 atm

▸ 1.26 atm

▸ 3.10 atm

▸ 5.38 × 10–4 atm

▸ 1.86 × 103

futurenurse15   8   1 Reply

sharonfaith31

A sample of carbon dioxide gas at 125C and 248 torr occupies a volume of 275 L. What will the gas ...

A sample of carbon dioxide gas at 125C and 248 torr occupies a volume of 275 L. What will the gas ...

A sample of carbon dioxide gas at 125°C and 248 torr occupies a volume of 275 L. What will the gas pressure be if the volume is increased to 321 L at 125°C?

▸ 212 torr

▸ 289 torr

▸ 356 torr

▸ 441 torr

▸ 359 torr

dkwilson   8   1 Reply

apontea13

A sample of an ideal gas has its volume doubled while its temperature remains constant. If the ...

A sample of an ideal gas has its volume doubled while its temperature remains constant. If the ...

A sample of an ideal gas has its volume doubled while its temperature remains constant. If the original pressure was 100 torr, what is the new pressure?

▸ 10 torr

▸ 50 torr

▸ 100 torr

▸ 200 torr

▸ 1000 torr

KoolinIt   8   1 Reply

starikovs

A sample of a gas occupies 1.40 L at 25C and 760 mmHg. What volume will it occupy at the same ...

A sample of a gas occupies 1.40 L at 25C and 760 mmHg. What volume will it occupy at the same ...

A sample of a gas occupies 1.40 L at 25°C and 760 mmHg. What volume will it occupy at the same temperature and 380 mmHg?

▸ 2.8 L

▸ 2.10 L

▸ 1.40 L

▸ 1.05 L

▸ 0.700 L

squeakykln   6   1 Reply

schmience

A sample of a gas has an initial pressure of 0.987 atm and a volume of 12.8 L. What is the final ...

A sample of a gas has an initial pressure of 0.987 atm and a volume of 12.8 L. What is the final ...

A sample of a gas has an initial pressure of 0.987 atm and a volume of 12.8 L. What is the final pressure if the volume is increased to 25.6 L?

▸ 2.03 atm

▸ 1.97 atm

▸ 0.494 atm

▸ 0.003 atm

▸ 323.4 atm

tbparker   7   1 Reply

romeo_izzy13

A pressure that will support a column of Hg to a height of 256 mm would support a column of water to ...

A pressure that will support a column of Hg to a height of 256 mm would support a column of water to ...

[html]A pressure that will support a column of Hg to a height of 256 mm would support a column of water to what height? The density of mercury is 13.6 g/cm3; the density of water is 1.00 g/cm3.

▸ 348 cm

▸ 1.00 × 102

kwmusick   7   1 Reply

livewelldreambi

A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25-g sample of the gas occupies a ...

A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25-g sample of the gas occupies a ...

[html]A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25-g sample of the gas occupies a volume of 1.00 L and exerts a pressure of 1.26 atm at –4.0°C. What is its molecular formula?(R = 0.08206 L • a

sunnisam   7   1 Reply

thevoicexxx

A gas sample occupies 8.76 L at a temperature of 37C. What is the volume if the temperature is ...

A gas sample occupies 8.76 L at a temperature of 37C. What is the volume if the temperature is ...

A gas sample occupies 8.76 L at a temperature of 37°C. What is the volume if the temperature is lowered to 0°C at constant pressure?

▸ 9.95 L

▸ 0 L

▸ 4.22 L

▸ 74.1 L

▸ 7.71 L

xiaoyu000   7   1 Reply

naderaide

A gas evolved during the fermentation of sugar was collected at 22.5C and 702 mmHg. After ...

A gas evolved during the fermentation of sugar was collected at 22.5C and 702 mmHg. After ...

[html]A gas evolved during the fermentation of sugar was collected at 22.5°C and 702 mmHg. After purification its volume was found to be 25.0 L. How many moles of gas were collected? (R = 0.08206 L • atm/K • mol, 1 atm = 760 mmHg)

▸ 0.

tls043   7   1 Reply

durandal

A gas cylinder containing 1.50 mol compressed methane has a volume of 3.30 L. What pressure does the ...

A gas cylinder containing 1.50 mol compressed methane has a volume of 3.30 L. What pressure does the ...

[html]A gas cylinder containing 1.50 mol compressed methane has a volume of 3.30 L. What pressure does the methane exert on the walls of the cylinder if its temperature is 25°C?(R = 0.08206 L • atm/K • mol)

▸ 9.00 × 10–2

sweetapple718   7   1 Reply

vlad8919

A flask with a volume of 3.16 L contains 9.33 g of an unknown gas at 32.0C and 1.00 atm. What is the ...

A flask with a volume of 3.16 L contains 9.33 g of an unknown gas at 32.0C and 1.00 atm. What is the ...

[html]A flask with a volume of 3.16 L contains 9.33 g of an unknown gas at 32.0°C and 1.00 atm. What is the molar mass of the gas?(R = 0.08206 L • atm/K • mol)

▸ 7.76 g/mol

▸ 66.1 g/mol

▸ 73.9 g/mol

▸ 81.4 g/mol

▸ 144 g/mol[

alireads   6   1 Reply

timmcgraw1994

A flask containing neon gas is connected to an open-ended mercury manometer. The open end is exposed ...

A flask containing neon gas is connected to an open-ended mercury manometer. The open end is exposed ...

[html]A flask containing neon gas is connected to an open-ended mercury manometer. The open end is exposed to the atmosphere, where the prevailing pressure is 745 torr. The mercury level in the open arm is 5.0 cm below that in the arm connected to th

wallyboy   8   1 Reply

strawberry8971

A flask containing argon gas is connected to a closed-ended mercury manometer. The closed end is ...

A flask containing argon gas is connected to a closed-ended mercury manometer. The closed end is ...

[html]A flask containing argon gas is connected to a closed-ended mercury manometer. The closed end is under vacuum. If the mercury level in the closed arm is 230. mm above that in the arm connected to the flask, what is the argon pressure, in torr?

ticktrader   8   1 Reply

dreamnluv

A fixed quantity of gas, initially at 600C, undergoes a temperature change at constant pressure in a ...

A fixed quantity of gas, initially at 600C, undergoes a temperature change at constant pressure in a ...

[html]A fixed quantity of gas, initially at 600ºC, undergoes a temperature change at constant pressure in a cylinder with a movable piston. What final temperature of the gas can result in the change of state depicted below?

DenverMade   6   1 Reply

realistpnoy

A fixed quantity of gas has a pressure of 1.35 atm, a volume of 23.8 L, and a temperature of 205.1 ...

A fixed quantity of gas has a pressure of 1.35 atm, a volume of 23.8 L, and a temperature of 205.1 ...

[html]A fixed quantity of gas has a pressure of 1.35 atm, a volume of 23.8 L, and a temperature of 205.1 K. If the pressure increases to 2.84 atm and the temperature rises to 233.4 K, what is the new volume of the gas?

▸ 0.183 L

▸ 7.06 L

▸ 9.94 L

johndoris   7   1 Reply

dreamkhei

A compound composed of carbon, hydrogen, and chlorine effuses through a pinhole 0.411 times as fast ...

A compound composed of carbon, hydrogen, and chlorine effuses through a pinhole 0.411 times as fast ...

[html]A compound composed of carbon, hydrogen, and chlorine effuses through a pinhole 0.411 times as fast as neon. What is the molecular formula of the compound?

▸ CHCl3

▸ CH2Cl2

▸ C2H2

Pats2010   8   1 Reply

bamboofactor

A block of dry ice (solid CO2, density = 1.56 g/mL) of dimensions 25.0 cm 25.0 cm 25.0 cm is left ...

A block of dry ice (solid CO2, density = 1.56 g/mL) of dimensions 25.0 cm 25.0 cm 25.0 cm is left ...

[html]A block of dry ice (solid CO2, density = 1.56 g/mL) of dimensions 25.0 cm × 25.0 cm × 25.0 cm is left to sublime (i.e., to pass from the solid phase to the gas phase) in a closed chamber of dimensions 4.00 m × 5.00 m × 3.00 m. Onc

kmonette   9   1 Reply

roman91

A 7.75-L flask contains 0.482 g of hydrogen gas and 4.98 g of oxygen gas at 65C. What is the partial ...

A 7.75-L flask contains 0.482 g of hydrogen gas and 4.98 g of oxygen gas at 65C. What is the partial ...

A 7.75-L flask contains 0.482 g of hydrogen gas and 4.98 g of oxygen gas at 65°C. What is the partial pressure of oxygen in the flask?

▸ 0.557 atm

▸ 0.043 atm

▸ 1.11 atm

▸ 33.5 atm

▸ 67 atm

neezy   7   1 Reply

ricyoung

A 3.0-L sample of helium was placed in container fitted with a porous membrane. Half of the helium ...

A 3.0-L sample of helium was placed in container fitted with a porous membrane. Half of the helium ...

[html]A 3.0-L sample of helium was placed in container fitted with a porous membrane. Half of the helium effused through the membrane in 24 hours. A 3.0-L sample of oxygen was placed in an identical container. How many hours will it take for half of

pharmdwannabe   11   1 Reply

dmp7474

A 250.0-mL sample of ammonia, NH3(g), exerts a pressure of 833 torr at 42.4C. What mass of ammonia ...

A 250.0-mL sample of ammonia, NH3(g), exerts a pressure of 833 torr at 42.4C. What mass of ammonia ...

[html]A 250.0-mL sample of ammonia, NH3(g), exerts a pressure of 833 torr at 42.4°C. What mass of ammonia is in the container? (R = 0.08206 L • atm/K • mol, 1 atm = 760 torr)

▸ 0.0787 g

▸ 0.180 g

▸ 8.04 g

▸ 17.0 g

marcsleiman   7   1 Reply

naderaide

A 2.50-L flask contains a mixture of methane (CH4) and propane (C3H8) at a pressure of 1.45 atm and ...

A 2.50-L flask contains a mixture of methane (CH4) and propane (C3H8) at a pressure of 1.45 atm and ...

[html]A 2.50-L flask contains a mixture of methane (CH4) and propane (C3H8) at a pressure of 1.45 atm and 20°C. When this gas mixture is then burned in excess oxygen, 8.60 g of carbon dioxide is formed. (The other

Mostafa91   10   1 Reply

studyinnurse

A 0.271-g sample of an unknown vapor occupies 294 mL at 140C and 847 mmHg. The empirical formula of ...

A 0.271-g sample of an unknown vapor occupies 294 mL at 140C and 847 mmHg. The empirical formula of ...

[html]A 0.271-g sample of an unknown vapor occupies 294 mL at 140°C and 847 mmHg. The empirical formula of the compound is CH2. What is the molecular formula of the compound?(R = 0.08206 L • atm/K • mol)

▸ CH2

ticktrader   10   1 Reply

yankeesaremyjam

1.000 atm of oxygen gas, placed in a container having a pinhole opening in its side, leaks from the ...

1.000 atm of oxygen gas, placed in a container having a pinhole opening in its side, leaks from the ...

[html]1.000 atm of oxygen gas, placed in a container having a pinhole opening in its side, leaks from the container 2.14 times faster than does 1.000 atm of an unknown gas placed in this same apparatus. Which of the following species could be the

hurtmaybe   8   1 Reply

djbo89

"The volume of an ideal gas is directly proportional to the number of moles of the gas at constant ...

"The volume of an ideal gas is directly proportional to the number of moles of the gas at constant ...

"The volume of an ideal gas is directly proportional to the number of moles of the gas at constant temperature and pressure" is a statement of ________ law.

▸ Charles's

▸ Boyle's

▸ Dalton's

▸ Avogadro's

▸ Gay-Lussac's

AsadQ1   6   1 Reply

ggyxxcool

"The volume of an ideal gas is directly proportional to its absolute temperature at constant ...

"The volume of an ideal gas is directly proportional to its absolute temperature at constant ...

"The volume of an ideal gas is directly proportional to its absolute temperature at constant pressure and number of moles" is a statement of ________ law.

▸ Charles's

▸ Boyle's

▸ Dalton's

▸ Avogadro's

▸ Gay-Lussac's

jack103106   8   1 Reply

BlondieX

"The pressure of an ideal gas is inversely proportional to its volume at constant temperature and ...

"The pressure of an ideal gas is inversely proportional to its volume at constant temperature and ...

"The pressure of an ideal gas is inversely proportional to its volume at constant temperature and number of moles" is a statement of ________ law.

▸ Charles's

▸ Boyle's

▸ Amontons's

▸ Avogadro's

▸ Gay-Lussac's

zer0latency   8   1 Reply

packar11

H does not depend on the path of a reaction, but U does.

H does not depend on the path of a reaction, but U does.

ΔH does not depend on the path of a reaction, but ΔU does.

▸ true

▸ false

darkfire12   8   1 Reply

channy40

The work done on the surroundings by the expansion of a gas is w = PV.

The work done on the surroundings by the expansion of a gas is w = PV.

The work done on the surroundings by the expansion of a gas is w = –PΔV.

▸ true

▸ false

nursecupcake   11   1 Reply

CJWVail2

The heat absorbed by a system at constant pressure is equal to U + PV.

The heat absorbed by a system at constant pressure is equal to U + PV.

The heat absorbed by a system at constant pressure is equal to ΔU + PΔV.

▸ true

▸ false

itshammertime   8   1 Reply

snowcat012

The enthalpy of vaporization of a compound is always positive.

The enthalpy of vaporization of a compound is always positive.

The enthalpy of vaporization of a compound is always positive.

▸ true

▸ false

capella234   7   1 Reply

12Jfiscus

The enthalpy of formation of a liquid is always larger than the enthalpy of formation of the gas of ...

The enthalpy of formation of a liquid is always larger than the enthalpy of formation of the gas of ...

The enthalpy of formation of a liquid is always larger than the enthalpy of formation of the gas of the same compound.

▸ true

▸ false

Septeos   7   1 Reply

crusherpsg

In an endothermic reaction, in going from the reactants to the products at the same temperature, the ...

In an endothermic reaction, in going from the reactants to the products at the same temperature, the ...

In an endothermic reaction, in going from the reactants to the products at the same temperature, the value of q is negative.

▸ true

▸ false

moreme   8   1 Reply

tranle311

In an endothermic process, heat is absorbed by the system.

In an endothermic process, heat is absorbed by the system.

In an endothermic process, heat is absorbed by the system.

▸ true

▸ false

rasnulx   8   1 Reply

Jaynie