4 Please answer the following question according to the Law of Conservation of Matter: Sam mixes 40 grams of backing soda with 20 grams of vinegar to produce a chemical change. After the chemical reaction happens, Sam is left with a clear liquid that has a mass of 50 grams and a gas that has a mass of
_.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.

How does the human body lever work?