Question

PLEASE HELP :D
A compound of iodine and cesium contains 78.00 g of metal and 74.05 g of nonmetal.

How many grams of cesium are in 39.96 g of compound?




How many grams of iodine?

Answer 1

Cesium is a metal, iodine is non metal

Answer 2

yes so cesium is 78g while iodine is 74.05g, but how do I figure out how much of each are in 39.96g ?

Answer 3

weird question :?

Answer 4

yepp. idk how to do it though. not even google had an answer

Answer 5

yh I first did the same ^_^

Answer 6

@wolfe8 Can you help ?

Answer 7

haha great minds think alike xD

Answer 8

lol right XD

Answer 9

haha i hope someone can help me with this :D

Answer 10

from first one if we calculte moles and then apply it to second one and find grams

Answer 11

how do I do that?

Answer 12

No.of moles = Mass of Cesium /molar mass of cesium

Answer 13

78/132.9055?

idk what i am doing xD FAIL

Answer 14

I also dunno .what Im sayin you to do XD

Answer 15

lawlz at us xD

Answer 16

its .586 moles of Cs
LOLs I dunno what to do next :P

Answer 17

lol Man !! im quitin .hope so someone really help u ASAP :D

Answer 18

lol thanks.

Answer 19

@ParthKohli please can you help?

Answer 20

I can try later after class. But this seems weird. I would have just given the mass of Iodine at first glance. I have class now.

Answer 21

The ratio of masses in the compound will always be the same.

Answer 22

thats what I was thinking but I dont know how to acutally do the math to campare them

Answer 23

The total mass of the compound is 152.05 grams.

Answer 24

If you have 39.96 grams, then the ratio is 39.96/152.05

Answer 25

And the ratio of cesium to the whole compound is 78/152.05

Answer 26

so it would be .513?

Answer 27

No... it'd just be 78/152.05 * 39.96

Answer 28

so I take the mass of Cesium and divide by the entire whole and then multiply by the other mass?

Answer 29

Well. The ratio of the mass of cesium to the mass of the whole compound will remain the same, correct?

Answer 30

ahhhh there we go. i just didnt know how to do that :D thanks! again!

Answer 31

I hope you understood.

Answer 32

yess thank you very much!

Answer 33

Sorry bout that I just got home. And I didn't see the second part of the question. Good luck.