A. 15.50 g B. 7.10 g C. 3.55 g D. 1.80 g Correct Answer: Option C - 3.55 g
A. -4 B. -2 C. +4 D. -8 Correct Answer: Option B = -2
A. 0.015 mole B. 0.038 mole C. 3.800 moles D. 1.500 moles Correct Answer: Option A - 0.015 mole Explanation…
A. a decrease in the free energy of the solution B. a decrease in the entropy of the solution C.…
A. complex B. neutral C. basic D. acidic Correct Answer: Option B - neutral
A. make baking powder B. make fruit juices C. remove rust D. dry substance Correct Answer: Option A - make…
A. 6 mins B. 8 mins C. 24 mins D. 48 mins Correct Answer: Option B - 8 mins Explanation…
C2H4(g) + H2(g) → C2H6(g) ΔH = -137kJ mol-1 A. exothermic B. spontaneous C. endothermic D. in equilibrium Correct Answer:…
A. The blue colour of the solution disappears B. Electrons flow from copper to zinc C. The zinc rod remain…
A. direct combination B. redox C. double decomposition D. neutralization Correct Answer: Option B - redox