Question

One liter of 2.0 M KCl solution and two liters of 1.0 M KCl solution have the same
A. Density
B. Concentration
C. Volume
D. Moles of solute

Answer 1

only one of those should make any sense if you think about it

Answer 2

density?

Answer 3

moles are 2 and 1
volume is one 1l and 2 l
concentration is 2m and 1m

Answer 4

one solution is twice as concentrated as the other, can't be density

Answer 5

i'm left with density

Answer 6

the moles are not 2:1

Answer 7

2.0M kcl
1.0M kcl....
I'm confused...i see two different amounts of moles

Answer 8

2L of 1M solution has 2 moles of solute in it

1L of 2M solution also has 2 moles of solute in it

Answer 9

you're looking at concentration, which is moles PER liter

Answer 10

so same moles???

the concept is a little hard for me to grasp

Answer 11

it does have the same moles.

Answer 12

instead of moles, what if it were some powdered drink mix?

put 1 scoop of mix into 2 1-L containers, and put 2 scoops into a different 1-L container.

Answer 13

ok..it's still 2 scoops of drink mix at the end of it all ?

Answer 14

essentially, yes

Answer 15

ok ok...hhhmm...i need to think about it more but understand it a little better
Thank you.

Answer 16

concentration is a ratio of moles/volume, so the moles present in a certain volume will be\[moles = concentration * volume\]
\[\frac{2mol}{L}*1L = \frac{1mol}{L}*2L\]

Answer 17

ok..thank you very much