A cylinder containing hydrogen gas

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Homework Help Overview

The problem involves a cylinder containing hydrogen gas and focuses on calculating the energy required to raise its temperature from 0.0°C to 31°C. The context includes the ideal gas law and heat transfer equations.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • The original poster attempts to apply the ideal gas law and heat transfer equations but notes difficulties in achieving the correct mass and energy calculations. Some participants question the understanding of molecular weight and its implications on the mass calculation.

Discussion Status

The discussion is ongoing, with participants exploring the implications of molecular weight on the calculations. Some guidance has been offered regarding the molecular weight of hydrogen, but there is no explicit consensus on the correct approach or solution yet.

Contextual Notes

Participants are navigating through potential misunderstandings related to the molecular weight of hydrogen and its effect on the mass used in calculations. There is also a mention of confusion regarding the terminology and concepts in physics.

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Homework Statement



A cylinder contains 270 L of hydrogen gas (H2 at 0.0 C) and a pressure of 10 atm. How much energy is required to raise the temperature of this gas to 31°C? (answer needs to be kJ)

Homework Equations


PV =nRT
and
Q= MCT



The Attempt at a Solution


PV = nRT==> M= .12061 kg
Q = MC T
(.12061)(.014304) (31) ====> also tried using kelvins instead of celsius for temp...neither has worked
 
Physics news on Phys.org
hydrogen gas is diatomic.
 
sorry, i don't know what that means. Terrible at physics...
 
The MW of H2= 2 gms so your mass is off by a factor of 2 as well.
 

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