Answer:
Number of moles = 0.116 mol
Explanation:
Given data:
Number of moles of potassium bromide = ?
Volume of solution = 68.5 mL
Molarity of solution = 1.65 M
Solution:
First of all we will convert the mL into L.
68.5 mL × 1 L /1000 mL
0.07 L
Molarity = Number of moles / Volume in litter
we will rearrange the formula:
Number of moles = molarity × volume in litter
Now we will put the values in formula:
Number of moles = 1.65 M ×0.07 L
Number of moles = 0.116 mol
