Question

Dimensional analysis (converting measurements)


The concentration of arsenic is 2.0 ug. Convert arsenic concentration to ppm and mg/L

Answer 1

1ug/L = 1ppb

Answer 2

2ppb = (2ug/L) = (0.002mg/1000mL)

Don't know where to go from there

Answer 3

The question wants mg/L so i think it is just

2ppb = 0.002 mg/L

Answer 4

It also wants it in ppm

Answer 5

1mg/L = 1ppm: so...

Answer 6

oh , well 1000ppm = 1ppb

Answer 7

where'd you get the 5 from?

Answer 8

(1mg/L) = 1ppm

(0.002mg/L) = Xppm

500(0.002) = 1 ppm? idk

Answer 9

is it a 500 mL solution?

Answer 10

no? It's 0.002mg per liter.

Answer 11

so 1/500th of 1ppm (or something).

0.002 = (1/500)

Answer 12

1 µg/L = 1ppb
1 mg/L = 1ppm

Answer 13

so how many ppm is 0.002mg? If that is what it is asking?

Answer 14

*0.002mg per liter

Answer 15

1 mg/L = 1 ppm
0.002 mg/L = ... ppm

Answer 16

Maybe is wants Xppm per mg/L? idk

Answer 17

0.002ppm?

Answer 18

i think that is it

Answer 19

makes sense?

Answer 20

so I was right before at (1/500)ppm

Answer 21

thank you

Answer 22

oh yeah you did say

"so 1/500th of 1ppm (or something)."

i missed that,

thats right