Question

A sample of helium-4 behaves as an ideal gas as it isheated at

constant pressure from 294 K to 404 K. If 33 J of work isdone by
the gas during this process, what is the mass of
heliumpresent?

Answer 1

0.05777 g

Step-by-step explanation:

Let Helium specific heat be 5.193 J/g K

As heat energy is converted to 33J or work done by this gas, this means the heat energy would heat m g of Helium from 294K to 404K, a difference of 110K

`E_h = mc_h \Delta T = 33`

`m = (33)/(c_h \Delta T) = (33)/(5.193 * 110) = 0.05777 g`