If an airplane that flies at high altitudes must be pressurized, does a submarine that travels deep beneath the sea also need to be pressurized?

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

Iam 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?

Anitrogen atom and an oxygen atom combine chemically to form nitric oxide. what is nitric oxide?