Percent Composition and Chemical Formulas

Front

Find the percent composition of Cu₂S?

Back

%Cu= 79.854   %S= 20.145

Front

Percent composition of Benzene, C₆H₆?

Back

C = 92.2%
H = 7.8%

Front

Which element has an abundance of 39.03% in the compound sodium phosphate, Na₃PO₄?

Back

O

Front

How many Hydrogen atoms are in the formula: 4H₂O?

Back

8

Front

Calculate the molar mass of CO₂.

Back

44 g/mol

Front

What are the units in molar mass?

Back

grams/mole

Front

What is the percent composition of Cl in Cl₂?

Back

100%

Front

Calculate the percent composition of nitrogen in ammonia (NH3).

Back

82.2%

Front

How many moles are in 19.82 g Mg?

Back

0.82 mol Mg

Front

Determine the mass of 4.20 moles of C₆H₁₂

Back

354 g