chemistry
posted by sandy .
how to solve for a 28.4 L sample of methane gas is heated from 35.0° C to 76.0° C. The initial pressure of the gas is 1.00 atm at 35.0° C. Assuming constant volume, what is the final pressure of the gas?
OK, I did the following:
P₁ = 28.4 L P₂ = ?
T₁ = 41.0◦C T₂ = 35.0◦C
+273.15K= +273.15 K=
314.2K 308.2K
P₁T₁ = P₂
T₂
(28.4 L)(314.2 K) = 29.0 L
(308.2 K)
Do my answer looks correct which is 29.0 L

chemistry 
Dr Russ
The question is asking for pressure so 29.0 L cannot be correct.
P1/T1 =P2/T2 where P is the pressure and T is the temperature in kelvin.
35.0C is (273.15+35.0) K
=308.15 K
76.0C is (273.15+76.0) K
=349.15 K
P1=1.00 atm
so
1.00 atm / 308.15 K
= P2 / 349.15 K
P2 = 1.133 atm
which is 1.13 atm to 3 sig figs (the starting pressure is to 3 sig figs)
Respond to this Question
Similar Questions

College Chemistry
A Cylinder is filled with 1.20 mol of He(g) at 25 C under ambient pressure of 0.966 atm. The gas in the cylinder is then heated with 1.430 KJ of heat, and the piston is raised by the expanding gas under the constant ambient pressure. … 
chemistry
A 28.4 L sample of methane gas is heated from 35.0 C to 76.0 C. The initial pressure of the gas is 1.00 atm at 35.0 C. Assuming constant volume, what is the final pressure of the gas 
chemistry
Question: how to solve for a 28.4 L sample of methane gas is heated from 35.0° C to 76.0° C. The initial pressure of the gas is 1.00 atm at 35.0° C. Assuming constant volume, what is the final pressure of the gas? 
PHYSICS
One mole of oxygen gas is at a pressure of 5.25 atm and a temperature of 29.5°C. (a) If the gas is heated at constant volume until the pressure triples, what is the final temperature? 
Physics
An ideal gas is contained within closed box behind a removable wall. The walls of the container are insulated, so that no heat may be transferred from the system. Initially, the gas has an initial pressure P and an initial temperature … 
science
Part I: Units of Measurement for Gas Laws For the following questions, use the following answer choices to indicate what each unit of measurement is used to measure (pressure, volume, or temperature). 1. atm 2. kPa 3. L 4. oC 5. torr … 
chemistry
A mixture og gases has a total pressure off 28.3 atm, it is made of: 5.8 atm of hydrogen gas, 7.2 atm of nitrogen gas, 3.5 atm of oxygen gas and some amount of methane. What is the pressure of methane? 
Chemistry
1) 0.19 litre of an ideal monatomic gas (Cv,m = 3R/2) initially at 83 °C and 47 atm pressure undergo an expansion against a constant external pressure of 1.19 atm, and do 2.3 kJ of work. The final pressure of the gas is 1.19 atm. … 
Science
A constant volume of O2 gas is heated from 140C to 216C. The final pressure is 22.3 atm. What was the initial pressure? 
Chemistry
A sample of hydrogen gas at a pressure of 0.694 atm and a temperature of 271 °C, occupies a volume of 417 mL. If the gas is heated at constant pressure until its volume is 626 mL, the temperature of the gas sample in °C will be?