Percent Composition and Solubility

Front

What is percent composition in chemistry?

Back

Percent composition is the percentage by mass of each element in a compound, calculated by dividing the mass of the element by the total mass of the compound and multiplying by 100.

Front

How do you calculate the percent composition of an element in a compound?

Back

To calculate the percent composition, use the formula: (mass of element in 1 mole of compound / molar mass of compound) x 100.

Front

What is the molar mass of carbon monoxide (CO)?

Back

The molar mass of CO is approximately 28.01 g/mol (12.01 g/mol for C and 16.00 g/mol for O).

Front

What is the percent composition of carbon in carbon monoxide (CO)?

Back

The percent composition of carbon in CO is approximately 43%.

Front

What is the percent composition of oxygen in carbon monoxide (CO)?

Back

The percent composition of oxygen in CO is approximately 57%.

Front

What is the molar mass of lithium phosphide (Li3P)?

Back

The molar mass of Li3P is approximately 34.83 g/mol (6.94 g/mol for Li and 30.97 g/mol for P).

Front

What is the percent composition of phosphorus in lithium phosphide (Li3P)?

Back

The percent composition of phosphorus in Li3P is approximately 60%.

Front

What is a saturated solution?

Back

A saturated solution is a solution that contains the maximum amount of solute that can be dissolved at a given temperature.

Front

How many grams of KNO3 are needed to make a saturated solution at 40°C?

Back

50 g of KNO3 are required to make a saturated solution at 40°C.

Front

What is a solute in a solution?

Back

A solute is the substance that is dissolved in a solvent to form a solution.