Answer
0.1
Explanation
Given:
mass of HCl = 0.915g
volume of HCl = 250 mL
We know the molar mass of HCl = 36,458 g/mol
Solution
Step 1: covert the volume from mL to L
1 mL = 0.001 L
therefore 250 mL = 0.25 L
Step 2: Calculate the number of moles of HCl
n = m/M where n is the moles, m is the mass and M is the molar mass
n = 0.915 g/36,458 g/mol
n = 0.025 mol
Step 3: Calculate the molarity
C = n/V where C is the molarity, n is the moles and V is the volume
C = 0.025 mol/0.25 L
C = 0.1
