There are 25.3 grams of magnesium nitrate salt that are added to 850 mL of water
ID: 775632 • Letter: T
Question
There are 25.3 grams of magnesium nitrate salt that are added to 850 mL of water What is the molarity of the solution? (2 Point) If the solution is diluted to 950 mL what is the molarity? (M1V1 =M2V2) (2 Points) There is another solution that is made with sodium phosphate putting 20.5 grams into 950 mL. What is the molarity of this solution? (2 Point) 400 mL of each solution is mixed and then ran through a filter. Write out the reaction and determine states of matter and net ionic equation (2 Points)Explanation / Answer
a) Molarity = (w/mw) x (1000/V)
= (25.3/148.3) x (1000/850)
= 0.20M
b) M1V1 = M2V2
0.2 x 850 = M2 x 950
M2 = 0.178M
c) Molarity = (w/mw) x (1000/V)
= (20.5/163.9) x (1000/950)
=0.13M
d) 2Na3PO4(aq) + 3Mg(NO3)2 (aq)------------------->6 NaNO3 (aq) + Mg3(PO4)2 (s)
net ionic : 3Mg^2+(aq) + 2PO4^3-(aq) --> Mg3(PO4)2(s)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.