Question

What mass of HCl is contained in 45.0 mL of an aqueous HCl solution that has a density of 1.19g cm ^ - 3 and contains 37.21% HCl by mass?​

Answer 1

0.01999 g

Step-by-step explanation:

To find the mass of HCl in 45.0 mL of the solution, we need to first find the volume of the solution and then convert that volume to mass.

First, we can convert 45.0 mL to liters by dividing by 1000:

45.0 mL ÷ 1000 = 0.045 L

Next, we can find the mass of the solution by multiplying the volume by the density:

0.045 L × 1.19 g/cm³ = 0.05365 g

Now that we have the mass of the solution, we can find the mass of HCl by multiplying the mass of the solution by the concentration of HCl expressed as a decimal:

0.05365 g × 0.3721 = 0.01999 g

So, there is approximately 0.01999 g of HCl in 45.0 mL of the solution.