Answer:
Explanation: To determine the moles of HCl present in 50.0 mL of 2.0 M HCl, we can use the formula:
M = moles/volume
where M is the molarity of the solution, moles is the number of moles of solute, and volume is the volume of the solution in liters.
First, we need to convert the volume of the solution from milliliters to liters:
50.0 mL = 0.0500 L
Now we can use the formula to find the number of moles of HCl:
M = moles/volume
2.0 M = moles/0.0500 L
moles = 2.0 M * 0.0500 L
moles = 0.100 mol
Therefore, there are 0.100 moles of HCl present in 50.0 mL of 2.0 M HCl.