Please help!! How many moles of hydrogen are in 3.06 x 10^-3 g of glycine,

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?