chemistry help please?
The question is:
A hard-water sample contains 0.0085% Ca by mass (In the form of Ca^2+ ions). What mass of water in grams contains 1.2 g of Ca? (1.2 g of Ca is the recommended daily allowance of calcium for 19-24 year olds)
I have no idea where to start, I'm so lost in this class!
- 3 months ago
Look up the answer here...(Cut and paste in your browser..
- Anonymous3 months ago
Let X be the mass of water.
mass of Ca = 1.2 g = X * 0.00085
Solve for X