How many moles of air are there in a 0.125 L Erlenmeyer flask if the pressure is 0.985 atm and the temperature is 20.0 oC?

Use ideal gas law and show work please. Thank you

The answer for the question is answered below.

Explanation:

Given:

volume (v) =0.125 L

Pressure (P) =0.985 atm

temperature (t) =20°C =20 + 273 =293 K

To solve:

no of moles (n)

We know;

According to the Avagadros law;

P × V = n × R × T

0.985 × 0.125 = n × 0.0821 × 293

0.123125= n × 24.0553

n =

n = 0.05 moles

0.05 moles of air is present i the Erlenmeyer flask

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error