How many moles of CaCl2 are in 250mL of a 3.0M of CaCl2?
Ca=40.08 -- Cl=35.45 X 2 ??
Thanks
To determine the number of moles of CaCl2 in a given solution, you can use the formula:
moles = concentration (in moles per liter) x volume (in liters)
First, convert the volume of the solution from milliliters (mL) to liters (L). Since 1 liter is equal to 1000 mL, divide the volume by 1000:
250 mL ÷ 1000 mL/L = 0.25 L
Next, plug in the values into the formula:
moles = 3.0 M x 0.25 L
Calculate the answer:
moles = 0.75 moles
Hence, there are 0.75 moles of CaCl2 in the 250 mL of a 3.0 M CaCl2 solution.
3.0M = 3moles/liter
You have only .250 liter
So, only .75moles of solute.
No need for atomic weights here.