What is the percentage by weight of calcium in Ca(OCI)2? [Ca = 40, Cl = 35.5, O = 16]
28.0%
31.6%
43.8%
44.5%
Correct answer is A
No explanation has been provided for this answer.
10.6 g
16.8 g
21.2 g
42.4 g
Correct answer is C
No explanation has been provided for this answer.
6.02 x 1023
3.01 x 1023
8.43 x 1024
1.20 x 1024
Correct answer is A
No explanation has been provided for this answer.
The number of particles in one mole of a chemical compound is the
atomic number
avogadro's number
mass number
oxidation number
Correct answer is B
No explanation has been provided for this answer.
Which of the following molecules is not linear in shape?
CO2
O 2
NH3
HCI
Correct answer is C
No explanation has been provided for this answer.