100 ml of a 2.4 m solution is diluted to a final volume of 250 ml what is the new molarity

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Can someone me with 3 and 4 plz. this is for masteries test.

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?