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Mass Percent Formula

Q. Suppose dry air near sea level has the following composition by volume: N2, 78.08 percent; O2, 20.94 percent; Ar, 0.93 percent; CO2, 0.05 percent. If the atmospheric pressure is 1.000 atm, calculate the partial pressure of each gas in atm.

Solved • May 4, 2020

Mass Percent Formula

Q. A hard water sample contains 0.0085% Ca by mass (in the form of Ca2+ ions). How much water (in grams) contains 1.2 g of Ca? (1.2 g of Ca is the recommended daily allowance of calcium for those between 19 and 24 years old.)

Solved • May 2, 2020

Mass Percent Formula

Q. Determine the mass (in g) of each NaCl solution that contains 1.1 g of NaCl.

Solved • Apr 10, 2020

Mass Percent Formula

Q. Ocean water contains 3.3 % NaCl by mass. What mass of ocean water in grams contains 49.8 g of NaCl?

Solved • Apr 10, 2020

Mass Percent Formula

Q. Ocean water contains 3.3 % NaCl by mass. How much salt can be obtained from 314 g of seawater?

Solved • Apr 10, 2020

Mass Percent Formula

Q. Calculate the concentration of each solution in mass percent. 107 mg C6H12O6 in 4.81 g H2O

Solved • Apr 10, 2020

Mass Percent Formula

Q. Silver chloride, often used in silver plating, contains 75.27% Ag. Calculate the mass of silver chloride in grams required to make 6.0g of silver plating.

Solved • Mar 8, 2020