Page 72 - DJJ20063- Thermodynamics 1

DJJ20063- Thermodynamics 1

Activity 2E

TEST YOUR UNDERSTANDING BEFORE YOU CONTINUE WITH THE NEXT INPUT…!

2.12 Study the statements in the table below. Mark the answers as TRUE or

FALSE.

STATEMENT TRUE or FALSE

i. Charles’ Law gives us the change in volume
of a gas with temperature when the

temperature remains constant.

ii. Boyle’s Law gives us the change in volume

of a gas with pressure if the pressure
remains constant.

iii. The characteristic equation of state of a

perfect gas is .

iv. Ro is the symbol for universal gas constant.

v. The constant R is called the gas constant.
vi. The unit of R is Nm/kg or J/kg.

3
2.13 0.04 kg of a certain perfect gas occupies a volume of 0.0072 m at a pressure
o
6.76 bar and a temperature of 127 C. Calculate the molecular weight of
the gas (M). When the gas is allowed to expand until the pressure is 2.12

3
bar the final volume is 0.065 m . Calculate the final temperature.

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