Scelta multiplaA stock solution of Pb(NO3)2 (315 mL, 2.5 M) contains how many Pb²⁺ ions and how many nitrate ions?567views
Scelta multiplaWhat is the mass of solute (in grams) present in 500 mL of a 2.0 M NaCl solution?113views
Scelta multiplaHow many grams of CaCl_2 are required to be dissolved in 0.700 kg of water to prepare a 1.25 m (molal) solution?117views
Scelta multiplaA student dissolves 12.0 g of MgSO_4 in enough water to make 500.0 mL of solution. What is the molarity of the magnesium sulfate solution that was formed?116views
Scelta multiplaHow many molecules of sucrose are present in 14.3 mL of a 0.140 M sucrose solution?117views
Scelta multiplaWhat is the molarity of a solution prepared by dissolving 10.7 g of NaI in 0.250 L of solution? (Molar mass of NaI = 149.89 g/mol)114views
Scelta multiplaWhat is the concentration of nitrate ions in 40.0 mL of a 0.25 M solution of copper(II) nitrate (Cu(NO_3)_2)?148views
Scelta multiplaA student dilutes 25.0 mL of an HCl solution to a final volume of 250.0 mL. The concentration of the diluted solution is found to be 0.15 M. What was the original concentration of the HCl solution before dilution?161views
Scelta multiplaHow many moles of solute are present in 5.0 L of a 5.0 M potassium nitrate (KNO_3) solution?118views
Scelta multipla95 g of ClO_2 is dissolved in water to prepare a 0.25 M solution. What is the final volume of the solution in liters?124views
Scelta multiplaWhat mass of NaCl (in grams) is present in 0.600 L of a 0.250 M NaCl solution?120views