Answer:
0.05 moles of Ca(OH)2
Step-by-step explanation:
The formula for molarity is: mol/L = M
First, convert 200.0 mL to L.
200 mL/1000 = 0.2 L
Next, plug in the values given.
mol/0.2 = 0.250
Rearrange the equation.
mol = 0.2*0.250
mol = 0.05
If you'd like to check it, simply plug in 0.05 to mol and divide it by 0.2. In theory, you should get 0.250.