Multiple Choice
The complete combustion of 0.285 g of a pure hydrocarbon yielded 0.878 g CO2 and 0.405 g H2O.What is the mass % C in this hydrocarbon?
A) 27.3%
B) 24.0%
C) 84.1%
D) 32.4%
E) 72.7%
Correct Answer:

Verified
Correct Answer:
Verified
Q1: How many oxygen atoms are there in
Q2: An aqueous solution of H<sub>2</sub>S is named:<br>A)hydrosulfuric
Q3: The name of which compound ends in
Q4: Combustion analysis is one way to determine
Q6: What is the empirical formula of a
Q7: In the following group,the compound with the
Q8: Rb<sub>2</sub>S is named:<br>A)rubidium disulfide<br>B)rubidium sulfide<br>C)rubidium(II)sulfide<br>D)rubidium sulfur
Q9: In which set do all elements tend
Q10: Nitroglycerin,C<sub>3</sub>H<sub>5</sub>N<sub>3</sub>O<sub>3</sub>:<br>A)has equal amounts of C and N
Q11: An organic compound contains C,H,and O.The percentages