Percent Composition.

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Presentation transcript:

Percent Composition

Dihydrogen dioxide Formula ______ Mass H ___ % H ______ Molar mass ______ Mass O ___ % O ______

Beryllium nitride Formula: _____ Mass Be _____ % Be ____ Molar mass: _____ Mass N ______ % N ____

Copper (II) hydroxide Formula: _____ Mass Cu ____ % Cu _____ Molar mass: _____ Mass O _____ % O ______ Mass H _____ % H ______

Percent by Mass

I have 75 g of CuCl2, how many grams of copper are in the sample?

Mrs. Farrington has a stock bottle of potassium ferricyanide, K3Fe(CN)6 which contains a total of 500 grams. How many grams of nitrogen are in the bottle?

Mrs. Lambert has a stock bottle of sodium hydroxide that contains 355 g, with the following formula NaOH x 2H2O. She needs help to calculate the grams of water present in the hydrate.

Mrs.Brammell has a stock bottle of copper (II) sulfate, with the following formula CuSO4 x 8H2O. She needs help to calculate the percent of water present in the hydrate.