The formula for finding Density is Mass over Volume.
Explanation:
So 35g over 25ml
the equation balanced is
3 PbI4 + 4 CrCl3 → 3 PbCl4 + 4 CrI3
We need to make sure that the pressure is in the same units.
let's convert the atm to mmHg. remember that 1 atm= 760 mmHg
1.03 atm (760 mmHg/ 1 atm)= 783 mmHg
to find the pressure of the gas, you just need to subtract the values
pressure of gas= 783 - 305 = 478 mmHg