A gas has density 0.87 g/L at 30oC and 131.2 kPa.

Find density at STP.

*Hint use the density of gases equation.

a
.57 g/L
b
.72 g/L
c
.75 g/L
d
.54 g/L

Explanation:

Using your hint, the density of gases equation is:

Where:

The conditions of your gas are:

State 1:

State 2 (STP):

Since M and R are constants, the density of gases equation drives to:

Now you can substitute and clear d₂

If you use 101.325kPa instead of 100kPa it will result 0.75g/L, which is the option C.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

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