8th Silberberg, sample problem 13.5. Find the concentration of calcium ion (in ppm) in a 2.92 g pill that contains 30.1 mg of Ca2 . Enter to 0 decimal places.

Answerit is not a suspension or colloid mixture, it is a solution mixture;

Silicon  6.0x10^23 is avogadro's number so the answer has to be 1 mole of whatever it is. since the molarity of silicon is equal to 28g/mol, this has to be the answer because 28g of si is 1 mole of si. 

Hellob. will be your answer  hope this