Answer :
Final answer:
To find the number of moles of HCl in 35.5 mL of a 0.200 M solution, convert the volume to liters and then use the molarity equation to calculate the moles. The result is 0.0071 moles of HCl.
Explanation:
The student has asked, How many moles of HCl are present in 35.5 mL of a 0.200 M solution. To answer this question, we will use the formula:
Molarity (M) = Moles of solute / Volume of solution in liters (L)
Rearranging the formula to find the number of moles, we get:
Moles of solute = Molarity (M) × Volume of solution in liters (L)
First, convert the volume from milliliters to liters:
35.5 mL × (1 L / 1000 mL) = 0.0355
Now, calculate the moles of HCl:
0.200 M × 0.0355 L = 0.0071 moles HCl
So, there are 0.0071 moles of HCl present in 35.5 mL of a 0.200 M hydrochloric acid solution.
