Question

A 1.0 g sample of hydrogen reacts completely with 19.0 g of fluorine to form a compound of

hydrogen and fluorine. What is the percent composition by mass of hydrogen in this
compound?​

Answer 1

Answer: hydrogen has 0.0504% and Fluorine has 0.950%

Explanation: H= 1.00794

F= 18.9984

1 X 1.00794+ 1 X 18.9984= 20.00778g/mol

H= 1.00794/20.00778= 0.0504%

F-18.9984/20.00778= 0.950%