Question

A balloon has 7 moles of gas in 10 L. If it is reduced to 5moles what is the new volume in liters?

Answer 1

To solve this problem we can use the gas law which tells us:

$PV=nRT$

Where,

P is the pressure of the gas

T is the temperature

n is the number of moles

V is the volume of the gas

R is a constant

Now, we are told that the number of moles is reduced. We will assume that the pressure and temperature remain constant.

We have two states, an initial one with the following conditions:

n1=7 moles

V1= 10L

And we have a final state:

n2=5moles

V2=?

If we substitute these values in the ideal gas equation we will have:

$undefined$