Question

How many moles of MgCl2 are present in 60 mL of 0.100 M MgCl2 solution?

a) 0.006 moles
b) 0.0066 moles
c) 0.06 moles
d) 0.66 moles

Answer 1

To find the number of moles of MgCl2 in 60 mL of a 0.100 M solution, convert the volume to liters, and then multiply by the molarity, resulting in 0.006 moles.

Step-by-step explanation:

The student asked how many moles of MgCl2 are present in 60 mL of 0.100 M MgCl2 solution. To find the number of moles, we use the formula:

moles = molarity × volume (L)

First, convert the volume from mL to L:

60 mL = 0.060 L

Next, multiply the molarity by the volume in liters:

0.100 M × 0.060 L = 0.006 moles

Therefore, the answer is (a) 0.006 moles.