Answer : The molarity of a solution is, 0.0337 M
Explanation : Given,
Mass of = 468 mg = 0.468 g (1 mg = 0.001 g)
Volume of solution = 50.0 mL
Molar mass of = 278 g/mole
Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.
Formula used :
Now put all the given values in this formula, we get:
Therefore, the molarity of a solution is, 0.0337 M
Answer:
first and 3rd are ur answers
Answer:
Molar mass = 27 g/mol
Explanation:
Given data;
Number of moles of Al = 0.2 mol
Mass of Al = 5.4 g
Molar mass of Al = ?
Solution:
Formula:
Number of moles = mass/molar mass
By putting values,
0.2 mol = 5.4 g/ molar mass
Molar mass = 5.4 g/ 0.2 mol
Molar mass = 27 g/mol