1.0g of strontium hydroxide, Sr(OH)2, is dissolved in water. A concentrated solution of sodium carbonate,...

1.0g of strontium hydroxide, Sr(OH)2, is dissolved in water. A concentrated solution of sodium carbonate, Na2CO3, is slowly added, and a white precipitate appears.
i. Give the balanced equation for the reaction producing this white precipitate.
ii. When no more precipitate is produced, the addition of sodium carbonate is stopped, and the precipitate is washed, thoroughly dried, and weighed. What is its mass?
iii. How many molecules are there in the precipitate? (Avagadro’s number is 6.02 x 1023.)
b) The precipitate is transferred to a crucible, heated to a very high temperature, cooled and weighed. The process is repeated until the weight is constant.
i. Give the balanced equation of the reaction occurring during the heating. Include state symbols.
ii. What will the mass of the solid residue be after the heating?
iii. What will happen if water is added to this residue?

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Asked by Kill you here on 15th March, 2022