Question

Need help understanding this equations , its chemistry but the equations is an algerbraic word problem

Answer 1

If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add 560 mL
more water to it?

(340 ml)(0.5 M) = (900 ml)(Mf); Mf
= 0.2 M

Answer 2

Hi amistre

Answer 3

hi

Answer 4

That day that you hlelped me the openstudy wouldnt letm e connect

Answer 5

http://openstudy.com/study#/updates/551c7abee4b07518b648d103

Answer 6

But thanks anyways

Answer 7

i vaguely recall doing something like that :)

Answer 8

ahaha

Answer 9

Reffering to the last joke u told me i could tell that was coming

Answer 10

what joke? :)

im not a chemist, how do we detemrine concentration?

Answer 11

The formula is c1 x v1 = c1 + v2 the answer is there i just dont udnerstand how to get it

Answer 12

Maybe not a joke but waiting a few seconds is not wise for a age like me

Answer 13

sorry its c1 x v1 = c2 x v2

Answer 14

thats better, the + just didnt look right

so, we aint messing with adding more NaBr, just increasing volume

Answer 15

yes but here it says he adds water

Answer 16

Ok well i mean it says 340 x .5 = 900 x .2 but i dont think thats right

Answer 17

concentration is moles per liter it looks like.

its a ratio of the moles of a substance compared to the volume that its dissolved in

Answer 18

Yes, im pretty sure thats right

Answer 19

if I have 340 mL of a 0.5 M NaBr solution,

.5 moles/340mL

what will the concentration be if I add 560 mL more water to it?

.5moles/(340+560)mL

Answer 20

M=1m/l i think is the equation

Answer 21

http://www.ausetute.com.au/concsols.html

Answer 22

Oh!!!

Answer 23

Ok thanks so it would be 1700? for 340/.5

Answer 24

my bad 680

Answer 25

Ok i understand it now thank you

Answer 26

So the left side will equal the right side?

Answer 27

i havent determined your c1*v1 = c2*v2

the proportions are not equal so the results will not match

you are not maintaining an equal concentration, but are diluting the substance. its ratio to the volume will decrease.

spose i stick you in a room with 3 beach balls, the current concentration of you to beach balls is 1/3

if i add 9997 beach balls, the concentration of you to beach balls is: 1/10000 which is a much smaller ratio.

Answer 28

other than that, im not real sure wht else is going on in the question

Answer 29

Haha ok thanks. that actually helped a bit i will continue my adventure for this equation

Answer 30

or maybe i can just head to the chemistry section

Answer 31

very well then :) good luck on the journey.

Answer 32

if you find out that they said the same thing as me .. let me know :)

Answer 33

Ok sure i will

Answer 34

Bye!