Textbook ExpertVerified Tutor
15 Nov 2021
Given information
The concentration of 
is 
.
The concentration of 
is 
.
Step-by-step explanation
Step 1.
The concentration of is 
. It means that 
of 
is present in 
of hard water.
The conversion of 
to 
is done as,
Therefore, the conversion of 
to g is done as,
The number of moles of is calculated by the formula,
The molar mass of is 
.
Substitute the value of mass and molar mass of in the above equation.
Therefore,
Hence, number of moles of present in 
of water 
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