Asolution of boric acid is mixed at a 1: 20 ratio (1 part boric acid to 20 parts distilled water). if there are 2 liters of distilled water in the solution, how many ml of boric acid are present?

The nutrient facts label on a food package lists the following: iron 50%. what does this figure indicate?

The first step in treating water from a river or lake is usually

For my health class we were given a bunch of pictures of pregnancy tests for extra credit we have to say if they’re negative or positive. i can’t tell if this is a shadow or if it’s a faint positive