6. Which of the following could be an empirical formula? A. CH2O B. H2O2 C. N2O4 D. C6H12O6
7. A certain substance is analyzed and found to contain the following weight
percentages: 36.84% nitrogen (N) and 63.16% oxygen (O). Determine the empirical
formula of this compound. (Atomic wts: N = 14.0, O = 16.0)
A. N3O2 B. NO2 C. N2O
D. N2O3
8. If the empirical formula of the compounds is CH2O and its molecular mass is 181
amu, what is its molecular formula?
A. C6H12O6 B. C12H22O11 C. C2H4O6 D. CHO
9. What is the molecular mass of Aspirin, C9H8O4 ?
A. 120.4 amu B. 180.17 amu C. 176.17 amu D.
142.50 amu
10. What is the percentage composition of Oxygen in a table sugar, C12H22O11?
A. 27.84 % B. 58.21 % C. 51.41 % D. 46.90 %
7. A certain substance is analyzed and found to contain the following weight
percentages: 36.84% nitrogen (N) and 63.16% oxygen (O). Determine the empirical
formula of this compound. (Atomic wts: N = 14.0, O = 16.0)
A. N3O2 B. NO2 C. N2O
D. N2O3
8. If the empirical formula of the compounds is CH2O and its molecular mass is 181
amu, what is its molecular formula?
A. C6H12O6 B. C12H22O11 C. C2H4O6 D. CHO
9. What is the molecular mass of Aspirin, C9H8O4 ?
A. 120.4 amu B. 180.17 amu C. 176.17 amu D.
142.50 amu
10. What is the percentage composition of Oxygen in a table sugar, C12H22O11?
A. 27.84 % B. 58.21 % C. 51.41 % D. 46.90 %