Question

@Abhisar What would be the resulting molarity of a solution made by dissolving 45.7 grams of Mg(OH)2 in enough water to make a 1087-milliliter solution?

Answer 1

Use the molar mass to find moles of Mg(OH)2. Convert the volume of the solution to Liters.

Answer 2

.78 moles

Answer 3

\(\sf \huge \boxed{Molarity = \frac{Moles~of~solute}{Volume~of~solution~in~litre}}\)

Answer 4

that is just confusing me more... aahh :(

Answer 5

so .78 would be moles of solute?

Answer 6

First calculate the number of moles of 45.7 grams Mg(OH)2

Answer 7

.78 moles

Answer 8

http://openstudy.com/study#/updates/4fa2a99be4b029e9dc3371fb

Answer 9

:P

Answer 10

one min

Answer 11

I CAN'T WAIT A MINUTE!
jk

Answer 12

:D

Answer 13

lol Abhi is timing you :P

Answer 14

Yes, that's correct

Answer 15

Now calculate the molarity by the formula i just told you.

Answer 16

.00071757??

Answer 17

1087 milliliter = how many litre?

Answer 18

1.087

Answer 19

.7175713

Answer 20

So, Molarity = 0.78/1.087 = ?

Answer 21

Jessie J, got it?

Answer 22

lol yeah, I said it before you asked :)

Answer 23

oh, can you check one other?

Answer 24

Probably yes

Answer 25

If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity?
I got approx 2.3

Answer 26

This one so easy :P

Answer 27

2.1/.92 right? :)

Answer 28

2.1/0.92 =?

Answer 29

LOL

Answer 30

Yes \(\huge \checkmark\)

Answer 31

\(\approx\)2.3

Answer 32

:)

Answer 33

:p
:D

Answer 34

Nom Nom Nom ^_^

Answer 35

you are eating me? :o

Answer 36

Yush.. Burp :D