Answer:
To prepare 20 M solution, you have to calculate the moles of tartaric acid firstly
moles = mass(g) / molar mass (g/mol)
Molarity (M) =moles / volume of solution(L)
Volume (V) = moles / molarity
Then you dissolve 5grams of tartaric acid in the result of the volume calculated above to get the concentration
Explanation:
