A. 66% B. 25% C. 40% D. 50% Correct Answer: Option D Explanation molar mass of SO2=64 :. % of…
A. the properties of a compound are those of its individual constituents while those of a mixture differ from its…
A. hydrogen and trioxocarbonate (IV) acid B. hydrogen, oxygen and carbon (IV) oxide C. hydrogen and carbon (ii) oxide D.…
A. platinum B. copper C. zinc D. carbon Correct Answer: Option D = carbon Explanation In the industrial of brine…
A. -4 B. -2 C. 4 D. -8 Correct Answer: Option B = -2
A. groups 1, 2, 3 B. groups 1 and 2 C. group 3 D. group 3 to 7 Correct Answer:…
A. methane B. ethane C. propane D. Butane Correct Answer: Option A - methane
A. 20 B. 25 C. 60 D. 75 Correct Answer: Option B - 25 Explanation Let the relative abundance of…
A. pink B. colourless C. red D. dark blue Correct Answer: Option D - dark blue Explanation The simplest test…
A. 14 B. 13 C. 12 D. 11 Correct Answer: Option D - 11 Explanation [H+][OH−] = 10 − 4…