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Chem

1. A gas with a volume of 300ml at 300mmHg will have a volume of 180ml at 500mmHg due to Boyle's Law. 2. A gas with a volume of 460ml at 500mmHg will have a volume of 252.19ml at 1.2 atm due to Boyle's Law. 3. A gas with a volume of 5 liters at 3 atm will have a pressure of 2 atm to expand its volume to 7500ml due to Charles' Law.

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76 views2 pages

Chem

1. A gas with a volume of 300ml at 300mmHg will have a volume of 180ml at 500mmHg due to Boyle's Law. 2. A gas with a volume of 460ml at 500mmHg will have a volume of 252.19ml at 1.2 atm due to Boyle's Law. 3. A gas with a volume of 5 liters at 3 atm will have a pressure of 2 atm to expand its volume to 7500ml due to Charles' Law.

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Cecille E.

Aldueza II
BSPSYII

1. A gas a volume of 300ml at 300mmHg. What will its volume be if the pressure is changed to
500mmHg? P1=300mmHg P2=300mmHg V2=?

Given: V1= 300ml Solution: V2=P1V1 V2= (300mmHg)(300ml)


Formula: V2= P1V1 P2 500mmHg
P2
V2= 180ml
2. A gas has a volume of 460ml at 500mmHg. What will be the volume at 1.2atm?
P1=500mmHg P2=1.2atm V2=?
Given: V1=460ml
Formula: V2= P1V1 V2= (500mmHg)(460ml)
P2 1.2atm
Convert 500mmHg to atm =500mmHg = 0.657895atm
V2=(0.657895atm)(460ml) V2= 252.19ml
1.2atm

3. A gas has a volume of 5 liters at 3atm. To expand the volume to 7500ml, what the new pressure
(in atm) have to be? Charless’ Law
P1=3atm V1=7500ml P2=?
Given: V1=5L Solution: P2 = (3atm)(5L)
Formula: P2= P1V1 7500ml
V2
Convert 5L to ml =5000ml
P2= (3atm)(5000ml) P2= 2atm
7500ml

4. A gas has a volume of 4 liters at 50°C. What will its volume be (in liters) at 100°C? 5. A gas has a
volume of 350ml at 45°C. If the volume changes to 400ml, what is the new temperature?
(answer in °C) Guy-Lussac’s Law

Given: V1=4L T1=50°C + 273.15K T2=100°C + 273.15K V2=?


Formula: V2= V1T2 Solution: V2= (4L)(373.15k) V2= 4.62L

T1 323.15K

5. The gases in a hair spray can are at a temperature of 27°C and a pressure of 30lbs/in2. If the
gases in the can reach a pressure of 390lbs/in 2, the can will explode. To what temperature must
the gases be raised in order for the can explode? Assure constant volume.
Given: T1=27°C +273.15 Formula: T2=P2V2T1
P1=30lbs/in 2 P1V1
P2=90lbs/in 2 Solution: T2= (90lbs/in 2)(27.4L)(300.15K)
V1= (30lbs/in 2) (27.4K)
V2=22.4L T2= 605,102 4 T2= 900.45K
T2=? 672

6. Maybelline (ousteau’s backup oxygen tank reads 900mmHg while on her boat, where the
temperature is 27°C. When she drives down to the bottom of an unexplored methane lake on a
recently-discovered moon of Neptune, the temperature will drop down to -183°C. What will the
pressure in her backup tank be at the temperature?
Given: P1=900mmHg
T1=27°C 273.15
T2=-183°C + 273.15
Formula: P2= T2P1 Solution: P2= (90.15K)(900mmHg) P2= 270.31mmHg
T1 300.15K

7. 50g of Nitrogen (N2) has a volume of _________ liters at STP

50g of N2 = 1 mole of N2 = 1.79 mole N2x22.4L = 40.01L


28g of N2

8. What is the density of dinitrogen monoxide gas at STP?


N2O-1x16=16

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