1.
A compound by no matter where it is found, consists of elements combined in a fixed ratio by
mass. This is an example of _________________________.
A) the law of multiple proportions
B) the law of conservation of mass
C) the law of conservation of energy
D) the law of conservation of matter.
E) the law of definite proportions
Points Earned: 0.0/0.
0
Correct
Answer(s):
E
2.
Calculate the mass of the oxygen that reacts with 1.24 g of methane to form 3.41 g of carbon
dioxide and 2.79 g of water.
A) 7.44 g
B) 1.86 g
C) 0.62 g
D) 4.96 g
Points Earned: 0.0/0.
0
Correct
Answer(s):
D
3.
A reaction proceeds according to the following equation:
A + 2B --> 2C + 3D
6.0 grams of A and l2.0 g of B reacted completely to give l4.0 g of C and ______ g of D.
A) 14.0 g
B) 12.0 g
C) 4.0 g
D) 2.0 g
Points Earned: 0.0/0.
