First calculate the number of moles of CaBr2 given the
molar mass of 199.89 g/mol.
moles CaBr2 = 0.9182 g / (199.89 g / mol) = 4.60 x 10^-3
mol
We see that each CaBr2 contains only 1 mole of Ca, so the
moles of Ca is also:
moles Ca+ = 4.60 x 10^-3 mol
So the molarity of this is:
Molarity Ca+ = 4.60 x 10^-3 mol / 0.500 L
<span>Molarity Ca+ = 9.19 x 10^-3 M</span>
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Answer:
There are 0.09996826 moles per liter of the solution.
Explanation:
Molar mass of HNO3: 63.02
Convert grams to moles
0.63 grams/ 63.02= 0.009996826
Convert mL to L and place under moles (mol/L)
100mL=0.1 L
0.009996826/0.1= 0.09996826 mol/L
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