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How many grams of Na2SO4 are required to prepare a solution of Na2SO4 with a molarity of 0.5 M and a final volume equal to 150 ml? MW of Na2SO4 = 142 g/mol

How many grams of Na2SO4 are required to prepare a solution of Na2SO4 with a molarity of 0.2 M and a final volume equal to 200ml? MW of Na2SO4 = 142 g/mol

A 100 ml solution contains 4.8 g of AgNO3, Calculate the molarity of this solution. MW of AgNO3 = 169.9 g/mol        

A cylinder, equipped with a piston, containing a nitrogen gas with a volume equal to 22.3 L at 90.2 Kpa, if the piston is moved down resulting in increasing the pressure to 115 Kpa. Calculate the new volume?

A cylinder containing a sample of nitrogen gas with a volume equal to 20 L, if this sample is compressed to a triple value of its initial pressure, calculate the final volume of this gas.

Calculate the number of molecules present in 0.2 g of HNO3?

How many milliliters should be withdrawn from a stock solution of H2SO4 with a concentration of 0.55 M to prepare a 0.1 Liter of this solution with a concentration of 0.2 M?

A cylinder containing a sample of chlorine gas at a pressure equal to 1.2 atm, if this sample is compressed resulting in decreasing its volume to one third of its original value, calculate the final pressure of this gas.

Calculate the number of molecules present in 0.8 g of H2SO4?

Calculate the molecular weight of Aluminum chloride AlCl3?