1) How do we calculate molarity (M)  a) moles of solute / litres of solution b) mass of solute / molar mass of solute c) moles of solute / moles of solvent 2) What is the unit for molarity?  a) m b) M c) molal 3) Mole fraction is... a) ratio os moles of solute to litres of solution b) fraction of a substance that reacts in a chemical reaction c) ratio of the number of moles of solute or solvent in solution to the total number of moles  4) What is the formula for molality? a) moles of solute / mass of solution b) moles of solute / mass of solvent c) moles of solute / litres of solution 5) What is the unit for molality a) molal b) M c) mol/L 6) What is means by 10% NaOH? a) 10 g of water dissolved in 100 g of solution b) 100 g of NaOH dissolved in 100 g of solution c) 10 g of NaOH dissolved in 100 g of solution 7) What is the used for ppm? a) to calculate molarity b) to use for very small quantity c) to determine ion present

CHAPTER 2 : STOICHIOMETRY (MOLE CONCEPT PART 2)

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