Question #3e253

1 Answer
G_Ozdilek
May 29, 2017

55.5 mg will do it

Explanation:

In 111 grams of #CaCl_2# you have 40 grams of #Ca# due to the fact that Ca has a mass of 40 grams and Cl has a mass of 35.5 grams.

Therefore, you need to take #(20*111)/40# mg of #CaCl_2# to get 20 mg/L Ca in a liter of water. It is 55.5 mg.

Your answer is 55.5 mg.

Related questions
See all questions in Molarity
Impact of this question
1409 views around the world
You can reuse this answer
Creative Commons License