What is the study of nature and the physical world using the scientific method

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

We are hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?