Answer: 36.07%
Explanation: Please see attachment for explanation
Hey there!
First we need to find the molar mass of Ca(OH)₂.
Ca: 1 x 40.078
O: 2 x 16
H: 2 x 1.008
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74.094 grams
Find how many moles are in 523 grams of Ca(OH)₂.
523 ÷ 74.094 = 7.06 moles
There are 2 atoms of oxygen in each molecule of Ca(OH)₂.
7.06 x 2 = 14.12
523g of Ca(OH)₂ contains 14.12 moles of oxygen.
Hope this helps!
HClO4 +NaOH -----> NaClO4 + H2O
moles of NaOH = (0.0832 x 50 ) /1000= 4.16 x10^-3 moles
since the mole ratio of HClO4 to NaOH is 1:1 the moles of HClO4 is also 4.16 x 10^-3 moles
volume of HClO4 is therefore = moles/ molarity
that is 4.16 x 10^-3mol/ 0.167 mol/L= 0.0249L
multiply by 1000 to convert to ml
0.0249 x 1000= 24.9 ml
I believe the answer would be Saturated.