PLEASE HELP

2. What is the molarity of a 5.00 x 102 ml solution containing 2490 g of KI?

3. How many moles of LiF would be required to produce a 2.5 M solution with a volume of 10.5 L?

Question

PLEASE HELP 

2.  What is the molarity of a 5.00 x 102 ml solution containing 2490 g of KI? 



3.  How many moles of LiF would be required to produce a 2.5 M solution with a volume of 10.5 L?

anonymous · Answer

Molarity= mass of KI / molar mass of KI X 1000 / Vol in ml

anonymous · Answer

molar mass of KI=39+127=166
Ans will be 30 molar

anonymous · Answer

Molarity = moles / Vol in Liter
rearange it:
moles = molarity X vol in L
moles = 2.5 X 10.5 = 26.25 moles of LiF is required