4b. Using the principle of the law of definite proportion, show
that 50.5g CO2 and 88.6g CO2 contain the same element in the
same mass ratio.

Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)