Kanderson1323 Kanderson1323
  • 13-05-2021
  • Chemistry
contestada

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

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xCressie
xCressie xCressie
  • 13-05-2021

Answer:

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.

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