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5/64 MCQs for:
The Mole Concept

1.60 g of a metallic oxide of type MO was dissolved in 100 cm³ of 1M HCl. The resulting liquid was made up to 500 cm³ with distilled water. 25.0 cm³ of the analyt required 21.02 cm³ of 0.1020 M NaOH for neutralisation. The relative atomic mass of the metal, M is:

In the reaction;

Na2SO4 + BaCl2 → BaSO4 + 2NaCl

17.3g of BaSO4 were precipitated by reacting 14.2g of Na2SO4 and 25.3g of BaCl2 solutions. The percentage yield of this reaction is:

Standard temperature is:

A. 0 oC

B. 273 K

C. 0 K

The volume of 0.1 M Sulphuric acid that will be neutralized by 20cm³ of 0.25M Sodium Hydroxide is?
Which pair of substances below are primary standards?