A. 24%, B. 48%, C. 12%, D. It depends where the sample came from
1-9-2. A 25.0 gram sample of a compound is found to be 24% chlorine by mass. How much chlorine is in a 50.0 g sample of the compound?
A. 24 g, B. 48 g, C. 12 g
1-9-3. A 17.0 g sample of a compound contains 14.0 g nitrogen and 3.0 g hydrogen. How much hydrogen does a 34.0 g sample of the compound contain?
A. 3.0 g, B. 6.0 g, C. 14.0 g, D. 28.0 g
1-9-4. A 32.0 g sample of a compound contains 16.0 g oxygen, 12.0 g carbon, and 4.0 g hydrogen. How much oxygen is present in a sample of this compound that contains 36.0 g carbon?
A. 12.0 g, B. 5.33 g, C. 48.0 g, D. 36.0 g
1-9-5. A 7.0 g sample of a compound contains 3.0 g of element "X" and 4.0 g of element "Y". What is the mass ratio of element "X" to element "Y" in a 70.0 g sample of this compound?
A. 0.75, B. 1.33, C. 7.5, D. 13.3
