by Sunday | Apr 18 | Chemistry NECO
A. hydrogen ions are in greater concentration than sodium ions. B. hydrogen is higher than sodium in the electrochemical series. C. hydrogen is lower than sodium in the electrochemical series. D. of the nature of the electrodes. E. the concentration of sodium ions is...
by Sunday | Apr 18 | Chemistry NECO
A. Can be used to dissolve organic substances B. Has a boiling point of 100°C C. Has a density of 19cm3 at 40°C D. Has a freezing point of 0°C E. is neutral to litmus Correct Answer: Option A – Can be used to dissolve organic...
by Sunday | Apr 18 | Chemistry NECO
A. Fluorine B. Helium C. Hydrogen D. Nitrogen E. Oxygen Correct Answer: Option B – Helium
by Sunday | Apr 18 | Chemistry NECO
A. calcium chloride, carbon (IV) oxide and water B. calcium chloride, and trioxocarbonate (IV) acid C. calcium hydroxide, carbon (IV) oxide and chlorine gas D. calcium hydroxide, carbon (IV) oxide and water E. calcium metal and water. Correct Answer: Option A –...
by Sunday | Apr 18 | Chemistry NECO
A. Boyle’s law B. Collision theory C. Laws of chemical combination D. Molecular motion in liquids and gases E. Vibrational motion in liquids. Correct Answer: Option D – Molecular motion in liquids and gases
by Sunday | Apr 18 | Chemistry NECO
A. δG is positive B. δG is zero C. δS is negative D. δS is positive E. δS is zero. Correct Answer: Option B = δG is zero
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