What are the steps of photosynthesis?

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

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)