Mole Concept

How many atoms of oxygen (O) are present in 2.64 moles of calcium phosphate, Ca₃(PO₄)₂? Express you answer in scientific notation, i.e., 6.02x10^23, rounded to 2 decimal places.

How many moles of bromine are in 4.98x10^23 atoms of bromine. Hint: bromine is a diatomic molecule. Round you answer to two decimal places.

Using the provided periodic table, determine the molar mass of aluminum acetate, Al(C₂H₃O₂)₃. Round your answer to 2 decimal places and do not include units (numeric answer only).

How many moles are present in 26.5 g of carbon? Round your answer to 2 decimal places.

How many grams are in 15 g of potassium? Round your answer to two decimal places.

How many moles of water are present in 3 L? Hint, the density of water is 1 g/L. Round your answer to two decimal places.