Answer:
0.146 g
Explanation:
Given data:
Volume of solution = 100 mL
Molarity = 10 mM
Molecular formula = C₇NH₁₆O₂
Mass of C₇NH₁₆O₂ needed = ?
Solution:
First of all we will convert the mM into M and mL to litter.
Volume of solution = 100 mL
Volume of solution = 100 / 1000 = 0. 1 L
Molarity = 10 mM
Molarity = 10 / 1000 = 0.01 M
Molar mass of C₇NH₁₆O₂ = 146.21 g/mol
For 1M solution we dissolve 146.21 g/mol in one litter
For 0.01 M
146.21 g/mol × 0.01 mol/ L = 1.4624 g/L
while we have to make 0.1 L solution,
1.4624 g/L ×0.1 L = 0.146 g
