PLEASE HELP WITH question 2 and 3 please

What is the molality of a solution that has 4 mol of kci in 0.800 kg of water

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

What information does a complete ionic equation give that the balanced equation doesn’t show?