Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
N2(g) + O2(g) ↔ 2NO(g); ΔH = + 180.6 kJ mol-1
In the reaction above, increase in temperature will
increase the quantity of N2
increase in the yield of NO
decrease the yield of NO
decrease the quantity of O2
Correct answer is B
No explanation has been provided for this answer.
more molecules
more atoms
larger surface area
relatively large mass
Correct answer is C
No explanation has been provided for this answer.
+3000 KJ mol-1
+300 KJ mol-1
-300 KJ mol-1
-3000 KJ mol-1
Correct answer is C
Heat, = -M C Q
= -50 * 4.2 * 14.3
= -300 KJ mol-1
M = Z/Q
M = Q/Z
M = Z/2Q
M = QZ
Correct answer is D
No explanation has been provided for this answer.
0.965 * 104C
4.820 * 104C
9.650 * 104C
48.200 * 104C
Correct answer is C
1 mol → 96500 * 2
0.5 mol → X
X = 0.5 * 96500 * 2
= 9.650 * 104C