Please help, thanks in advance

Initially, the balloon had 3.0 liters of gas at a pressure of 400 kpa and was at a temperature of 294 k. if the balloon is cooled to 277 k and its volume decreased to 1 l, what will the new pressure in the balloon be?

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?