A 200. gram sample of a salt solution contains 0.050 grams of NaCl. What is the concentration of the solution in parts per million (ppm)?

What is true for a substance that releases energy

Complete each row of the table below by filling in the missing prefix or missing exponent.

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?