A chemical was found to contain 43.7% phosphorous by mass and 56.3% oxygen by mass. It was also determined that the molar mass of the compound was 283.88g/mol. What is the
molecular formula?

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?

Answer explain why it is not possible to deduce a complete order of reactivity.