How many moles of Ca(OH)2 are needed to make 200.0 mL of 0.250 M solution? Ca(OH)2

0.05 moles of Ca(OH)2

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.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.