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November 01, 2025, 11:59:32 am
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Author Topic: IMPOSSIBLE subtraction mol answer  (Read 5366 times)  Share 

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physics

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IMPOSSIBLE subtraction mol answer
« on: March 07, 2010, 08:36:00 pm »
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0.0150mol - 5.61 *10^-3mol  =  9.39 *10 ^-3 mol
impossible? i think the anwser is wrong for the study guide :P
i keep getting 0.014434mol instead




What mass of sodium floride in kg, must be added to a 750ML reserviour (1ML= 10^6L) to porduvce a concentration of flouride ions of 0.9mgL^-1?
there is 0.01989g of NaF in 1L of 0.9mgL^-1
so basically u just somehow multiply 10^6 and 750ML and u convert ur answer from mg to g to kg but the powers are different for my answer  which annoys me ..(eg. the answer says1.5 *10^3 but i get 1.5 *10^4) whcihc is the massive problem 



this study guide is evil!!!

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simonhu81292

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Re: IMPOSSIBLE subtraction mol answer
« Reply #1 on: March 07, 2010, 09:17:28 pm »
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silly anna!!!  :D
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simonhu81292

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Re: IMPOSSIBLE subtraction mol answer
« Reply #2 on: March 07, 2010, 09:26:33 pm »
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hey also ...
for the subtraction one you did 0.015-5.61x10^-4 instead
0.015-0.00561 will give you 9.39x10^-3
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physics

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Re: IMPOSSIBLE subtraction mol answer
« Reply #3 on: March 08, 2010, 02:50:12 pm »
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i got it! :D
i kept typing 10 then EXP then ^-3 which got me the worng answers XD
thanka youuu <3 i owe  youuu
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simonhu81292

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Re: IMPOSSIBLE subtraction mol answer
« Reply #4 on: March 08, 2010, 03:11:39 pm »
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Glad you got it !!!
way to go ~~~  ;)
 :smitten:
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kenhung123

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Re: IMPOSSIBLE subtraction mol answer
« Reply #5 on: March 08, 2010, 03:44:11 pm »
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Is anna your gf?
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superflya

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Re: IMPOSSIBLE subtraction mol answer
« Reply #6 on: March 08, 2010, 03:48:19 pm »
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Quote from: kenhung123 on March 08, 2010, 03:44:11 pm
Is anna your gf?

i smell chemistry :P (excuse my lameness but i just had to ;D)
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the.watchman

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Re: IMPOSSIBLE subtraction mol answer
« Reply #7 on: March 08, 2010, 03:50:31 pm »
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Quote from: superflya on March 08, 2010, 03:48:19 pm
Quote from: kenhung123 on March 08, 2010, 03:44:11 pm
Is anna your gf?

i smell chemistry :P (excuse my lameness but i just had to ;D)

LOL nice one ;D
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physics

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Re: IMPOSSIBLE subtraction mol answer
« Reply #8 on: March 08, 2010, 06:46:50 pm »
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LOL NO NO NO hahahahaha :)
Quote from: the.watchman on March 08, 2010, 03:50:31 pm
Quote from: superflya on March 08, 2010, 03:48:19 pm
Quote from: kenhung123 on March 08, 2010, 03:44:11 pm
Is anna your gf?



hahahaha why say that for :(
jokes = D
my bf is in korea :)

i smell chemistry :P (excuse my lameness but i just had to ;D)

LOL nice one ;D
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physics

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Re: IMPOSSIBLE subtraction mol answer
« Reply #9 on: March 08, 2010, 06:53:13 pm »
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 8-)



my boyfriend is in korea :)
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simonhu81292

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Re: IMPOSSIBLE subtraction mol answer
« Reply #10 on: March 08, 2010, 07:58:34 pm »
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haha... what makes you think that?
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kenhung123

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Re: IMPOSSIBLE subtraction mol answer
« Reply #11 on: March 08, 2010, 08:02:05 pm »
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Heaps of flirting! xD
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simonhu81292

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Re: IMPOSSIBLE subtraction mol answer
« Reply #12 on: March 08, 2010, 08:03:11 pm »
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as in this?
 :smitten:
i always use that ... lol
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Cthulhu

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Re: IMPOSSIBLE subtraction mol answer
« Reply #13 on: March 08, 2010, 08:03:58 pm »
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Quote from: superflya on March 08, 2010, 03:48:19 pm
Quote from: kenhung123 on March 08, 2010, 03:44:11 pm
Is anna your gf?

i smell chemistry :P (excuse my lameness but i just had to ;D)
Sorry I had the cover off the sulfur container.
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physics

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Re: IMPOSSIBLE subtraction mol answer
« Reply #14 on: March 08, 2010, 08:05:20 pm »
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ahahahahah! :3 i cbb arguing back...
Quote from: kenhung123 on March 08, 2010, 08:02:05 pm
Heaps of flirting! xD
LIke this..... " your the best for helping me solve this problem <3 " :3  meh

stop picking on me  :O
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