2. you are on a spaceship and are running out of oxygen. there is a supply of water and you have a strong
electrical supply. you need 120 liters of oxygen (at stp) to last until you reach earth. you can't use all of
the water or you will die. you check the water gauge and you see that you have 500 kg of water left. can
you make it home? how much water will you have to electrolyze in order to produce enough oxygen?
how much water will you have left for drinking?

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?

Introduction of drugs into the gastrointestinal tract is a form of administration. a. enteral b. topical c. parenteral d. inhalation

Jenny places a strip of ph paper into a solution. when she removes the ph paper, it has turned yellow-green. what should jenny do next to determine the ph of her solution? a. use a different testing method because the ph paper should not change colors b. place the ph paper into a machine that reads the ph of the solution c. compare the ph paper's color with the color of ph paper from another solution d. compare the ph paper's color with a chart of colors and ph ranges