13 The base unit for concentration of a substance in chemistry is -----------.
14 What is a mole of a substance ?
Amount of substance which contains 14.0g of carbon 12 isotope
Amount of substance which contains 13.0g of carbon 12 isotope
Amount of substance which contains 12.0g of carbon 12 isotope
Amount of substance which contains 11.0g of carbon 12 isotope
15 In chemistry, substances react on the basis of ?
Amount in grams equivalent
Amount in volume equivalent
Amount in relative ratios
Amount in moles equivalent
16 An undergraduate student weighed 20g of sodium carbonate salt. If Na=23, O=16, carbon = 12and H=1, what is the mole of the hydroxide?
13. Mole 14. Amount of substance which contains 12.0 g of carbon 12 isotope 15. Amount in grams equivalent 16. 0.50 mole