TopScore #3 Chemistry

[sinned]

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what is the value of the rate constant for a reaction that has a half-life of 1.5 hours?

Ans: 4.6 x 10^-1 (hr.^-1)

anybody know?

anyways I have my test this friday 😱 and I just took topscore exam 3 just the natural sciences and got,
Bio: 18
Chem: 17
Orgo: 23

On previous tests, I scored the following,
PAT avg: 21-23
RC avg: 21
QR avg: 18

I am getting antsy and hope everything goes alright... 😕

 

[coodoo]

t1/2 = ln2/k

k = ln2/1.5

.693/1.5 = .46

 

[sinned]

hey coodoo thanks for the fast response, but am i really suppose to do ln2 without a calculator?

Is there a way of solving ln2 without using a calculator?

 

[coodoo]

hey coodoo thanks for the fast response, but am i really suppose to do ln2 without a calculator?

Is there a way of solving ln2 without using a calculator?

remember than ln2 = .69

thats it

 

[sinned]

oh koo, thanks!