Vitamin B solution have a concentration of 0.2 M.
Explanation:
First we need to calculate the number of moles of vitamin B.
number of moles = mass / molecular weight
number of moles of vitamin B = 25 / 337 = 0.0742 moles
To determine the molarity of the solution we use the following formula:
molar concentration = number of moles / volume (L)
molar concentration of vitamin B = 0.0742 / 0.39 = 0.19 ≈ 0.2 M
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molar concentration
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