Calculate the number of grams of HNO3 which must be added to 31.5 g of H2O to prepare a 0.95 m solution.
Calculate the number of grams of HNO3 which must be added to 31.5 g of H2O...
How many grams of magnesium chloride (MgCl2) must be added to 23.0 g of water to prepare a 6.92% (m/m) solution of magnesium chloride?
Calculate the mass, in grams, of barium hydroxide that must be added to a 125-mL volumetric flask in order to prepare 125 mL of a 0.129 M aqueous solution of the salt.
Calculate the mass, in grams, of calcium acetate that must be added to a 500-mL volumetric flask in order to prepare 500 mL of a 0.238 M aqueous solution of the salt.
Calculate the amount of water (in grams) that must be added to each of the following substances to produce the indicated solution 20.7 g of MgCl2 in the preparation of a 6.2% mass solution
Calculate the mass, in grams, of copper(II) acetate that must be added to a 300-mL volumetric flask in order to prepare 300 mL of a 0.231 M aqueous solution of the salt.
How many grams of KCN (Mm = 65.1 g/mol) must be added to 900. mL of 1.240-M solution of HCN in order to prepare a pH = 8.86 buffer?
How many grams of citric acid, C6H8O7 (Mm = 1925 g / mol), must be added to 50.0g of acetic acid (Tb = 118.5 C, Kb = 3.07 C / m) to prepare a solution with a boiling point of 120.3 C?
QUESTION 5 Determine the mass in grams of pentane that must be added to 67 g of benzene to make a 1.04 m solution. Give your answer to 2 decimal places.
How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 550. mL of 0.976-M solution of NH3 in order to prepare a pH = 9.15 buffer? What volume (to the nearest 0.1 mL) of 4.00-M NaOH must be added to 0.600 L of 0.300-M HNO2 to prepare a pH = 3.50 buffer?
מו Calculate the mass of glucose (C6H606) that must be added to 100 g of water to give a solution whose freezing point is -3.8°C. The freezing point depression constant of water is 1.86 °C/m. The molar mass of glucose is 180.16 g/mol Give your answer in grams to 3 significant figures