CHEM101L Lab Exam 8
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CHEM101L_LAB_V5
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Lab 8: Using the Ideal Gas Law
Question
1
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Started on
Friday, December 1, 2023, 4:28 PM
State
Finished
Completed on
Friday, December 1, 2023, 4:32 PM
Time taken
4 mins 14 secs
Grade
11.20
out of 14.00 (
80
%)
Which gas law states: temperature and pressure are directly proportional?
Select one:
a.
Boyle’s
b.
Charles’s
c.
Avogadro’s
d.
Gay-Lussac’s
In general, for a gas at a constant volume:
Select one:
a.
The pressure of the gas is directly proportional to its temperature in Kelvin.
b.
The volume of the gas is directly proportional to its temperature in Celsius.
c.
The pressure of the gas is inversely proportional to its temperature in Kelvin.
d.
The volume of the gas is inversely proportional to its temperature in Celsius.
My Account
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3
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4
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Question
5
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Which gas law states: volume will decrease if pressure increases, and vice versa?
Select one:
a.
Boyle’s
b.
Charles’s
c.
Avogadro’s
d.
Gay-Lussac’s
What is the pressure of 21 moles of gas at a temperature of 73 °C and volume of
93.33 L?
Select one:
a.
1.35 atm
b.
2.70 atm
c.
0.64 atm
d.
6.39 atm
Calculate the number of moles of gas with a volume of 70 L at a temperature of 65
°C and pressure of 2.4 atm.
Select one:
a.
6.05 moles
b.
3.15 moles
c.
1.65 moles
d.
3.30 moles
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6
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7
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8
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Which gas law is primarily used when working with volume or temperature
changes?
Select one:
a.
Boyle’s
b.
Charles’s
c.
Avogadro’s
d.
Gay-Lussac’s
What effect would a decrease in volume have on pressure, assuming that
temperature (T) and moles of gas (n) are kept constant?
Select one:
a.
Pressure would increase.
b.
Pressure would stay the same regardless of a change in volume.
c.
Pressure would decrease.
d.
Not able to determine with the above information.
Which gas law states: volume will decrease if pressure increases, and vice versa?
Select one:
a.
Boyle’s
b.
Charles’s
c.
Avogadro’s
d.
Gay-Lussac’s
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Related Questions
Lab 7: Gas Law
Pre-Lab Questions
3. Your cousin made a bad life choice and went to Dominican College instead of STAC. He is
also taking General Chemistry Lab this semester. Instead of reacting Mg with HCl, he is
supposed to react zinc, Zn with HCl and performed a similar experiment. He reacted a 0.063
g sample of zinc with excess 1 M HCl at 24 °C (both lab and water temperature). The
reaction produced a gas that expanded to a volume of 25.0 mL. The atmospheric pressure
was 760 mmHg on the day he performed the experiment.
a. Write the balanced equation for this reaction.
HCI
b. What is the pressure (in atm) of the H₂ gas that was produced? Remember to take into
account the vapor pressure of water.
c. What is the temperature in Kelvin?
Name:
d. How many moles of H₂
moles of H₂ should you produce with this amount of starting material?
116
e. Using the P, V, T, and n listed above, solve for your experimentally determined value of
the Ideal Gas Constant, R.
***
arrow_forward
All changes saved
10. A sample of gas stored at STP has a volume of 7.0 L. The gas is cooled to 250 K and expands to a volume of 8.0 L.
What is the pressure of the gas after it is cooled?
40.1 kPa
160 kPa
80.1 kPa
E 250 kPa
| 11. Which question can be answered using the scientific method?
D Which kind of wax melts faster?
How do bees make wax?
Who discovered wax?
What kind of wax are crayons made of?
PREVIOUS
1-50 of 50
NEXT
REVIEW
arrow_forward
For the following sets of pressure/volume data, calculate the new volume of the gas sample after the pressure change is made. Assume that the temperature and the amount of gas remain constant.
V =
a.
V
= 123 mL at 738 mm Hg
= ? mL at 777 mm Hg
Volume =
mL
b. V = 208 mL at 1.11 atm
V = ? mL at 0.852 atm
Volume =
mL
c. V = 3.19 L at 102 kPa
V = = ? L at 138 kPa
Volume =
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01 10
11 20
21 22
23
24
25
Question 23
A bottle of concentrated hydrochloric acid is opened and set beside an open bottle of concentrated ammonium hydroxide. A white cloud
forms above the opening of the bottles. What is the white cloud?
Your answer:
O A) ammonium chloride
O B) hydrochloride gas
C) ammonia gas
D) water vapor
Clear answer
US
8:05
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Number 7
arrow_forward
ing Boyle's Law
A cylinder is filled with 10.0 L of gas and a piston is put into it. The initial pressure of the gas is measured to be 198. kPa.
The piston is now pulled up, expanding the gas, until the gas has a final volume of 79.0 L. Calculate the final pressure of the gas. Round your answer to 3
significant digits.
gas
kPa
piston
Explanation
cylinder
Check
S
4
5
&
Ⓒ2023 McGraw
8
Rights Reserved. Terms of Use Privacy Cer
Arya
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A. Molar Volume of Hydrogen Gas
mass of magnesium
0.150
g
0.139 g
volume of hydrogen gas
158
ml
141
mL
temperature of hydrogen gas
23.0
22.0°C
°C
atmospheric pressure (see barometer)
759
mm Hg
759
mm Hg
vapor pressure of water (see table 1)
21
mm Hg
20
mm Hg
partial pressure of hydrogen gas
738 mm Hg
739
_mm Hg
Correct the volume of hydrogen gas to STP for trial 1 (see Example Exercise 1).
volume of hydrogen gas (STP)
mL
mL
He
Show the calculation for the moles of hydrogen gas for trial 1 (see Example Exercise 1).
moles of hydrogen gas
mol
Show the calculation for the molar volume of hydrogen gas at STP for trial 1.
mol
Molar volume of hydrogen gas (STP)
L/mol
L/mol
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A balloon is filled with helium gas to a volume of 2.5 L at a pressure of 99.6 kPa and
a temperature of 24 °C. What Gas Law am I using if I decide to keep the pressure of
the gas constant, and I manipulate the temperature to find the new volume of the
gas?
H
Li
Na Mg
Rb
Be
Ca Sc
Fak
Sr
Cs Ba
Fr Ra
Act
La La
Boyle's Law
Ideal Gas Law
MB
Charles's Law
Gay-Lussac's
Combination Law
Periodic Table of the Elements
H
KID
Hf Ta W Re Os Ir
Symbel
2023
Cr Mn Fe Co Ni Cu
40 41 42
MA
Zr Nb Mo Tc Ru Rh Pd Ag Cd
TH
10
Rf Db Sg Bh Hs Mt Ds
Basic
1980
H
45
Pt Au Hg
B
14 15 14 17 2
Ga Ge
"Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb
Np Pu Am Cm Bk Cf Es Fm Md No
Ac Th Pa
As Se Br
LIRIUM
VILA
Cl Ar
He
53 40 54
Sb
Tl Pb Bi Po At Rn
Rg Cn Uut FI Uup Lv Uus Uuo
T Xe
arrow_forward
Show the work to sample 1,2 and 3.
arrow_forward
Hi! I need answers on the last two multiple-choices question. The overview of the experiment can be seen in the picture. This is experiment is about testing the Ideal Gas Law.
arrow_forward
1,2,3 please
arrow_forward
Use the combined gas law to calculate pressure.
A 9.82-L sample of gas has a pressure of 1.88 atm and a temperature of 80 °C. The sample is compressed to a volume of 8.39 L
and is heated to 140 °C. Calculate the new pressure of the gas, assuming that no gas escaped during the experiment.
atm
Check & Submit Answer
Show Approach
tv
2. hulu
W
F4
F5
F6
F7
F8
F10
&
一
7
8
arrow_forward
Part 1: Gas Laws
The physical properties of gases can be explained using four variables; volume (V), pressure
(P), temperature (T), and amount in number of moles (n).
Four simple laws are used to explain the behavior of gaseous species. Complete the table
below to summarize the four gas laws.
Name of the gas Properties that Properties that Gas law equation Gas law explanation
law
stay constant
are changing
n and T
P:V1 = P:V2
Charles's law
T and V are directly
proportional. (as T increases V
also increases)
Pand T
P1
P2
T1
T2
Avogadro's law
V and n
arrow_forward
While studying the relationship between the pressure and volume of a gas, members of a science dass
conducted an experiment in which they changed the pressure on a balloon and then measured the balloon's
volume. They collected the data to the right.
10
Pressure (Nicm)
Volume of Balloon (mL)
15
20
25
500
375
300
Which graph correctly represents the data?
Pressure on Balloon
(N/cm)
Pressure on Balloon
(N/cm)
Pressure on Balloon
(N/cm)
Pressure on Balloon
(Nom)
Volume of Balloon
Valume of Balloon
Volume
ime of Balloon
Volume of Balloon
(ju)
arrow_forward
A Moving to another question will save this response.
Question 14
Container A. 1 g hydrogen gas (H2). p-1 atm, V=1 L
(H = 1 amu)
Container B. 1 g fluorine gas (F2). p=1 atm, V3D1L
(F = 19 amu)
In order for the pressures to be the same
%3D
the temperature in container A must be greater than that in B
not enough information is given to answer this question
the temperatures in both containers must be equal
the temperature in container B must be greater than that in A
arrow_forward
Please help with question 2 a-c
arrow_forward
000
Lab Data
Welcome to Student Portal x
arrow_forward
A gas evolved during the fermentation of glucose has a volume of 1.50 L when measured at
20°C and 1.00 atm. The volume of this gas at the fermentation temperature of 36.0°C and 1.00
atm pressure is
A) 1.37 L
2.98 L
(© 1.79 L
D) 1.58 L
arrow_forward
Can you answer questions 7-10 please I don’t understand them
arrow_forward
Part IV: Relationships Between Gas Variables
Scientists in the late 1800’s noted relationships between many of the state variables related to gases (pressure, volume, temperature), and the number of gas particles in the sample being studied. They knew that it was easier to study relationships if they varied only two parameters at a time and “fixed” (held constant) the others. Use the simulation to explore these relationships.
Variables
Constant Parameters
Relationship
Proportionality
(see hint below)
pressure, volume
directly proportional
or
inversely proportional
volume, temperature
directly proportional
or
inversely proportional
volume, number of gas particles
directly proportional
or
inversely proportional
Hint: A pair of variables is directly proportional when they vary in the same way (one increases and the other also increases). A pair of variables is inversely proportional when they vary in opposite ways (one…
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V3
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Al changes saved
23. The combined gas law uses multiple variables to show the relationship between the volume, the pressure,
and the temperature of gases. What is the mathematical relationship between these three variables?
O RT
Vi
PT
V2
%3D
PVT = PVT,
%3D
T2
%3D
PV
PV2
O PV
PV2
%3D
T
arrow_forward
The density of nitric oxide (NO) gas at 1.21 atm and 39.9°C is ________ g/L.
0.708
1.41
0.370
0.0471
11.1
arrow_forward
Both of these please ?
arrow_forward
1-3 please
arrow_forward
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Related Questions
- Lab 7: Gas Law Pre-Lab Questions 3. Your cousin made a bad life choice and went to Dominican College instead of STAC. He is also taking General Chemistry Lab this semester. Instead of reacting Mg with HCl, he is supposed to react zinc, Zn with HCl and performed a similar experiment. He reacted a 0.063 g sample of zinc with excess 1 M HCl at 24 °C (both lab and water temperature). The reaction produced a gas that expanded to a volume of 25.0 mL. The atmospheric pressure was 760 mmHg on the day he performed the experiment. a. Write the balanced equation for this reaction. HCI b. What is the pressure (in atm) of the H₂ gas that was produced? Remember to take into account the vapor pressure of water. c. What is the temperature in Kelvin? Name: d. How many moles of H₂ moles of H₂ should you produce with this amount of starting material? 116 e. Using the P, V, T, and n listed above, solve for your experimentally determined value of the Ideal Gas Constant, R. ***arrow_forwardAll changes saved 10. A sample of gas stored at STP has a volume of 7.0 L. The gas is cooled to 250 K and expands to a volume of 8.0 L. What is the pressure of the gas after it is cooled? 40.1 kPa 160 kPa 80.1 kPa E 250 kPa | 11. Which question can be answered using the scientific method? D Which kind of wax melts faster? How do bees make wax? Who discovered wax? What kind of wax are crayons made of? PREVIOUS 1-50 of 50 NEXT REVIEWarrow_forwardFor the following sets of pressure/volume data, calculate the new volume of the gas sample after the pressure change is made. Assume that the temperature and the amount of gas remain constant. V = a. V = 123 mL at 738 mm Hg = ? mL at 777 mm Hg Volume = mL b. V = 208 mL at 1.11 atm V = ? mL at 0.852 atm Volume = mL c. V = 3.19 L at 102 kPa V = = ? L at 138 kPa Volume =arrow_forward
- 01 10 11 20 21 22 23 24 25 Question 23 A bottle of concentrated hydrochloric acid is opened and set beside an open bottle of concentrated ammonium hydroxide. A white cloud forms above the opening of the bottles. What is the white cloud? Your answer: O A) ammonium chloride O B) hydrochloride gas C) ammonia gas D) water vapor Clear answer US 8:05arrow_forwardNumber 7arrow_forwarding Boyle's Law A cylinder is filled with 10.0 L of gas and a piston is put into it. The initial pressure of the gas is measured to be 198. kPa. The piston is now pulled up, expanding the gas, until the gas has a final volume of 79.0 L. Calculate the final pressure of the gas. Round your answer to 3 significant digits. gas kPa piston Explanation cylinder Check S 4 5 & Ⓒ2023 McGraw 8 Rights Reserved. Terms of Use Privacy Cer Aryaarrow_forward
- A. Molar Volume of Hydrogen Gas mass of magnesium 0.150 g 0.139 g volume of hydrogen gas 158 ml 141 mL temperature of hydrogen gas 23.0 22.0°C °C atmospheric pressure (see barometer) 759 mm Hg 759 mm Hg vapor pressure of water (see table 1) 21 mm Hg 20 mm Hg partial pressure of hydrogen gas 738 mm Hg 739 _mm Hg Correct the volume of hydrogen gas to STP for trial 1 (see Example Exercise 1). volume of hydrogen gas (STP) mL mL He Show the calculation for the moles of hydrogen gas for trial 1 (see Example Exercise 1). moles of hydrogen gas mol Show the calculation for the molar volume of hydrogen gas at STP for trial 1. mol Molar volume of hydrogen gas (STP) L/mol L/molarrow_forwardA balloon is filled with helium gas to a volume of 2.5 L at a pressure of 99.6 kPa and a temperature of 24 °C. What Gas Law am I using if I decide to keep the pressure of the gas constant, and I manipulate the temperature to find the new volume of the gas? H Li Na Mg Rb Be Ca Sc Fak Sr Cs Ba Fr Ra Act La La Boyle's Law Ideal Gas Law MB Charles's Law Gay-Lussac's Combination Law Periodic Table of the Elements H KID Hf Ta W Re Os Ir Symbel 2023 Cr Mn Fe Co Ni Cu 40 41 42 MA Zr Nb Mo Tc Ru Rh Pd Ag Cd TH 10 Rf Db Sg Bh Hs Mt Ds Basic 1980 H 45 Pt Au Hg B 14 15 14 17 2 Ga Ge "Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Np Pu Am Cm Bk Cf Es Fm Md No Ac Th Pa As Se Br LIRIUM VILA Cl Ar He 53 40 54 Sb Tl Pb Bi Po At Rn Rg Cn Uut FI Uup Lv Uus Uuo T Xearrow_forwardShow the work to sample 1,2 and 3.arrow_forward
- Hi! I need answers on the last two multiple-choices question. The overview of the experiment can be seen in the picture. This is experiment is about testing the Ideal Gas Law.arrow_forward1,2,3 pleasearrow_forwardUse the combined gas law to calculate pressure. A 9.82-L sample of gas has a pressure of 1.88 atm and a temperature of 80 °C. The sample is compressed to a volume of 8.39 L and is heated to 140 °C. Calculate the new pressure of the gas, assuming that no gas escaped during the experiment. atm Check & Submit Answer Show Approach tv 2. hulu W F4 F5 F6 F7 F8 F10 & 一 7 8arrow_forward
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