Which property describes a mixture? It cannot be separated by physical methods. It has a single chemical composition. It cannot
2 answers:
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Answer:
so rate constant is 4.00 x 10^-4
Explanation:
Given data
first-order reactions
85% of a sample
changes to propene t = 79.0 min
to find out
rate constant
solution
we know that
first order reaction are
ln [A]/[A]0 = -kt
here [A]0 = 1 and (85%) = 0.85 has change to propene
so that [A] = 1 - 0.85 = 0.15.
that why
[A] / [A]0= 0.15 / 1
[A] / [A]0 = 0.15
here t = (79) × (60s/min) = 4740 s
so
k = - {ln[A]/[A]0} / t
k = -ln 0.15 / 4740
k = 4.00 x 10^-4
so rate constant is 4.00 x 10^-4
Answer:
The total distance is 24 m.
The tiger's resultant displacement is 8 m.
Explanation:
Given that,
Width of tiger= 8 m
Tiger starts from the right side of the cage,
Paces to the left side
Then, back to the right side,
finally, back to the left
We need to calculate the total distance covered
Using formula of distance
Put the value into the formula
We need to calculate the tiger's resultant displacement
Using formula of displacement
Put the value into the formula
Hence, The total distance is 24 m.
The tiger's resultant displacement is 8 m.