(b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?
moles=Molarity*volumeinLiters.
4.3198
To determine the number of moles of HCl present in the given solution, we need to use the equation:
moles (molecules) = concentration (mol/L) x volume (L)
Given:
Concentration of nitric acid solution (HCl) = 4.50 M
Volume of nitric acid solution = 35.0 mL
First, let's convert the volume from mL to L:
35.0 mL = 35.0 mL * (1 L / 1000 mL) = 0.035 L
Now we can calculate the number of moles (n) using the equation:
moles (HCl) = concentration (nitric acid solution) x volume (nitric acid solution)
= 4.50 M x 0.035 L
= 0.1575 moles
Therefore, there are 0.1575 moles of HCl present in 35.0 mL of a 4.50 M solution of nitric acid.
To determine the number of moles of HCl in the given solution of nitric acid, we first need to understand the relationship between moles, concentration, and volume.
The formula to calculate the number of moles is:
moles = concentration (M) x volume (L)
Given:
Concentration of nitric acid solution = 4.50 M
Volume of nitric acid solution = 35.0 mL
To find the volume in liters, we need to convert the given volume from milliliters to liters. Since 1 L = 1000 mL, we can convert 35.0 mL to liters by dividing it by 1000:
35.0 mL รท 1000 = 0.035 L
Now we have the volume in liters. We can use the formula mentioned earlier to calculate the number of moles:
moles = 4.50 M x 0.035 L
Multiplying the concentration (4.50 M) by the volume (0.035 L), we can find the number of moles:
moles = 0.1575 moles
Therefore, there are 0.1575 moles of HCl present in 35.0 mL of a 4.50 M solution of nitric acid.