- #1
janesmith
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Hello. If somebody has time can you check my answers?
Q1: A gas occupies a 2.0L container at 25°C and 2.0atm. If the volume of the container is halved and the temperature remains constant, what is the new pressure?
P1V1 = P2V2
P2 = 2.00 atm x (2.00L / 1.00L) = 4.00 atm
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Q2: The volume of 50mL of an ideal gas at STP increases to 100mL. If the pressure remains constant, what is the new temp?
V1/T1 = V2/T2
T2 = (100mL / 50 mL) x 273K
T2 = 546K
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Q3: How many moles of Oxygen gas, O2, are present in a 3.5L container held at a pressure of 0.5atm and a temp of 77°C?
n = PV/RT
n = (0.5atm x 3.5L) / (0.082 L•atm/mol•K x 350K)
n = 50.225 mole O2
Thanks in advanced if you take the time to check these for me.
Q1: A gas occupies a 2.0L container at 25°C and 2.0atm. If the volume of the container is halved and the temperature remains constant, what is the new pressure?
P1V1 = P2V2
P2 = 2.00 atm x (2.00L / 1.00L) = 4.00 atm
---
Q2: The volume of 50mL of an ideal gas at STP increases to 100mL. If the pressure remains constant, what is the new temp?
V1/T1 = V2/T2
T2 = (100mL / 50 mL) x 273K
T2 = 546K
---
Q3: How many moles of Oxygen gas, O2, are present in a 3.5L container held at a pressure of 0.5atm and a temp of 77°C?
n = PV/RT
n = (0.5atm x 3.5L) / (0.082 L•atm/mol•K x 350K)
n = 50.225 mole O2
Thanks in advanced if you take the time to check these for me.