How much energy would be required to vaporize 45.0 grams of water?

Determine the reaction and balance the following equations urgent due in the morning

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)

How can the periodic table be used to predict the behavior of elements?