How are air masses classified? a. by the direction they move b. by weather conditions they bring c. by their size and shape d. by the locations where they are formed

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

How many moles are in 123.0 grams of kclo4?