A pure copper sphere has a radius of 0.943 in. How many copper atoms does it contain? [The volume of a sphere is (4/3)*Tand the density of copper is 8.96 g/cm]

When you perform this reaction, what could remain at the end of the reaction? check all that apply. excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product aqueous aluminum chloride water

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?

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by