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mariadelia27
Group Title
A 10 gram sample of a substance that's used to detect explosives has a kvalue of 0.1353.
Find the subtance's halflife, in days.round to the nearest hundreds
 one year ago
 one year ago
mariadelia27 Group Title
A 10 gram sample of a substance that's used to detect explosives has a kvalue of 0.1353. Find the subtance's halflife, in days.round to the nearest hundreds
 one year ago
 one year ago

This Question is Open

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
you shoud try to ask it in chemistry section
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
ok thanks it scause i really need this answer
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
do you have the formula?
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
n=Noe^kt
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
n is moles?
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
i need to round to the nearest hundreds too
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
what is the unity of k?
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
What does k represent?
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
a positive constant that depends on the substance itself and on the units used to measure time
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
5=10*e^(Kt), but what unity of time? seconds^1?
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
Its in days
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
there a picture of the question
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
and probally the formula is e^(kt)
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
did you see the picture
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
ya its a diff question :)
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
my bad ill got teh wrong one
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
if k is in days^1 just solve 5=10*e^(kt), and you will find t
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
but i dont know how to solve it either .
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
can you help me please i really need it
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
ok
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
dw:1372309018511:dw
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
so the answer is 0,5
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
its exponoential decay thats the section were doing
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
5.12303
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
k=0.1353
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
i use that k
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
yeah k is that
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
0.1353
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
it said its wrong .
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
we have to know thr unity of k
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
What did you put the answer as?
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
sorry I am not making sense. What did you enter as your answer?
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
5.12303
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
Its to the hundredths place so it should be 5.12
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
try 1871.15 days
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
im supposing k is in years
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
Ohhhh yaaaaa that makes more sense actually
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
just that its 53% not 51 %
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
this is another question can you guys help with this one
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
please i did it
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
please !
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
you guys help me i really did to passs this class tomorrow is my last day
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
are you guys there ?
 one year ago

mariadelia27 Group TitleBest ResponseYou've already chosen the best response.0
heeelp anyone
 one year ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
6733.44 years
 one year ago
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