Question

How much salt FeCl2 (in grams) is needed to make 150 g of solution of
calcium chloride with 6% mass concentration
Select one:
o a. 9g
O b.6 g
O c.3g
d. 7,5 g​

Answer 1

Answer:

Ok, so I calculated the concentration to be 9.62x10^-3 and then multiplied this by 2 since there are 2 chlorine ions. Using this i used mass=cxvxmm which ...

Here's what I got. Explanation: Interestingly enough, I'm not getting 0.0341% w/v either. Here's why. Start by calculating the percent composition .