Answer:
the amount of gas in the container is 0.646 moles.
Step-by-step explanation:
To get this equation, we need to make sure that the units are consistent. In this case, we can use the gas constant R=0.082dfracLcdotatmKcdotmol and convert the pressure to atmospheres and the temperature to kelvins. The volume is already given in liters.
The pressure in atmospheres is: dfrac1281.40textmmHg760textmmHg/atm=1.6855textatm
The temperature in kelvins is: 322.85+273.15=596textK
Plugging these values into the ideal gas law, we get: 1.6855times17.86=ntimes0.082times596
Solving for n, we get: n=dfrac1.6855times17.860.082times596=0.646textmoles