The Mr of sodium hydroxide is 40. How many grams of sodium hydroxide are there in:
(a) 500cm3 of a molar solution ?
(b) 25cm3 of a 0.5 M solution?
What is the concentration in moles per litre of:
(a) a sodium carbonate solution containing 53g of the salt (Na2CO3) in 1 litre?
(b) a copper (II) sulfate solution containing 62.5g of the salt (CuSO4.5H2O) in 1 litre?
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Answer:
0.5 grams of sodium hydroxide are there in:
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