A. linear, 180° B. bent, 109.5° C. tetrahedral, 109.5° D. bent, 105° Correct Answer: Option D D. bent, 105°
A. 75,000 particles B. 35,000 particles C. 25,000 particles D. 50,000 particles Correct Answer: Option C C. 25,000 particles
Na2CO3 + 2HCl → 2NaCl + H2O + CO2 A. 5 B. 7 C. 3 D. 9 Correct Answer: Option…
i. Atomic Number ii. Ionization energy iii. Metallic character iv. Electron affinity A. ii and iii only B. ii and…
A. Fractional crystallization B. Fractional distillation C. Filtration D. Evaporation Correct Answer: Option A A. Fractional crystallization
A. the constituents of air are in a fixed proportion by mass B. it cannot be represented with a chemical…
A. biological catalysts are called enzymes B. catalyst do not appear in the balanced equation C. catalyst reduce the activation…
A. -122kJ B. -132kJ C. -88kJ D. -60kJ Correct Answer: Option B B. -132kJ
A. yellow to green B. orange to green C. yellow to red D. orange to red Correct Answer: Option B…
A. the equilibrium will shift B. rate of forward reaction will increase C. rate of backward reaction will increase D.…