Answer:
Specific gravity of the saturated solution is 2
Explanation:
The specific gravity is defined as the ratio between density of a solution (In this case, saturated solution of potassium iodide, KI) and the density of water. Assuming density of water is 1:
Specific gravity = Density
The density is the ratio between the mass of the solution and its volume.
In 100mL of water, the mass of KI that can be dissolved is:
100mL * (1g KI / 0.7mL) = 143g of KI
That means all the 100g of KI are dissolved (Mass solute)
As the volume of water is 100mL, the mass is 100g (Mass solvent)
The mass of the solution is 100g + 100g = 200g
In a volume of 100mL, the density of the solution is:
200g / 100mL = 2g/mL.
The specific gravity has no units, that means specific gravity of the saturated solution is 2
Answer: 0.67 moles of 
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number
of particles.
To calculate the moles, we use the equation:


According to stoichiometry:
3 moles of
is produced by 2 moles of 
Thus 1 mole of
is produced by=
of 
Thus 0.67 moles of
are required to produce 28.3 g of
Answer:
Mass of CuSO4.H2O obtained: 
Explanation:
The molecular weight of the salt is: 
<u>In the solution</u>: 12.5 g of CuSO4
In moles: 
<u>Mass of wate</u>r:
5 moles of water per mol of salt: 
Mass of CuSO4.H2O obtained: 