A student was talking with her younger brother about what she was learning. She asked him if he knew how food and oxygen got to the cells in the body. He responded, Sure, I know. This is how it works: We eat food, and it goes through food tubes to the cells. We breathe in air, and it goes through air tubes to the cells in the body.
Build on the younger brother’s ideas to provide a more scientific description of what happens when food and oxygen enter the body and travel to cells.

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released