Question

calculate the number of moles of HCl present in 500 mL of 0.1 M HCl solution​

Answer 1

Answer:

volume of solution. However, the volume does not have the proper units since it is given in terms of milliliters instead of liters. We can convert 500 mL into liters by using the conversion factor 1000mL = 1L. When 500 mL is divided by 1000 mL/L, we obtain a volume of 0.50 L.

Now we can rearrange the equation to solve for the number of moles, which will allow us to determine the mass. We can do this by multiplying by liters of solution on both sides of the equation. The liters of solution will cancel out on the right side, leaving the number of moles being equal to the molarity times volume like so:

Moles of solute = (liters of solution) * (Molarity)

Moles of solute = (0.50 L) (6.0 M) = 3.0 mol of HCl

Now we have to convert the 3.0 mol of HCl into grams of HCl. This can be done by multiplying 3.0 mol by the molecular weight of HCl, which is 36.46 g/mol.

(3.0 mol)(36.46 g/mol) = 109 g HCl PLZ MARK AS BRAINLEIST

Answer 2

Given:

The molarity of HCl solution = 0.1 M

The volume of the solution = 500 mL

To Find:

The number of moles of HCl

Solution:

Number of moles in a given sample =

Given mass of the element in the sample / Molar mass of the element

Since the molarity of the given solution is 0.1 moles,

⇒ 0.1 moles of HCl is present in 1L of solution.

or 0.1 moles of HCl is present in 1000mL of solution.

Since the volume taken is only 500 mL, using the unitary method the number of moles in 500 mL of solution = 0.1 / 2

= 0.05

Hence, the number of moles of HCl present in 500 mL of 0.1 M HCl solution​ is 0.05.