In a chemical reaction, ∆H is positive when
H (product) >H (reactant)
H(product) < H (reactant)
H (product) = H (reactant)
H (product) = Zero (reactant)
Correct answer is A
No explanation has been provided for this answer.
atmospheric pressure
partial pressure
total pressure
vapour pressure
Correct answer is B
No explanation has been provided for this answer.
What is the value of -14oC on the Kelvin temperature scale?
259K
287 K
287oK
259oK
Correct answer is A
No explanation has been provided for this answer.
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.