I finished the problem on the top. I need help solving the problem under it. The question is (In the question above, it turns out the grass is Oxygen. How many grams of Oxygen is there?

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?

If the solubility of a gas in water is 1.22 g/l at 2.75 atm, what is its solubility (in g/l) at 1.0 atm?