2 V2O5 + 5 Si → 4 V + 5 SiO2 Given the above balanced equation, calculate the number of grams of silicon required to prepare 307 grams of vanadium metal.

When 1.848 g of finely divided magnesium is burned, 3.080 g of a white oxide is obtained. Determine the empirical formula of the oxide. At mass of Mg= 24g/mole and O= 16g/mole

What is the difference between substituted aluminum in silicates and adding sodium as modifier in glasses?

Sodium hydrogen sulfate is used as a cleaning agent and as a flux (a substance that promotes the fusing of metals and prevents the formation of oxides). One of the ways in which sodium hydrogen sulfate is manufactured is by reacting sodium dichromate, Na2Cr2O7, with sulfuric acid. This process also forms water and chromium(VI) oxide, CrO3. Write a balanced equation for this reaction. (You do not need to include states.) How many kilograms of sodium dichromate, Na2Cr2O7, are necessary to produce 130.4 kg of sodium hydrogen sulfate? How many kilograms of chromium(VI) oxide are formed when 130.4 kg of sodium hydrogen sulfate is made? What is the minimum volume of 18.0 M H2SO4 solution necessary to react with 874.0 kg of sodium dichromate? What is the maximum mass of sodium hydrogen sulfate, NaHSO4, that can be formed from the reaction of 874.0 kg of sodium dichromate with 400.0 L of 18.0 M H2SO4?