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ANEK [815]
3 years ago
7

At 700 k, the rate constant for this reaction is 6.2 × 10–4 min–1. how many minutes are required for 10.0% of a sample of cyclop

ropane to isomerize to propene?
Mathematics
1 answer:
Anna35 [415]3 years ago
8 0

Answer:

170 min

Step-by-step explanation:

We know that there is a kinetics of the first order, which has the following equation:

ln ([A] t / [A] o) = -k * t

Solving for t:

t = - ln ([A] t / [A] o) / k

How we want to know is the time required with 10%, so [A] t / [A] o = 100% - 10%, that is, 90% = 0.9. We also know that k = 6.2 * (10 ^ -4)

Knowing this, we replace:

t = - ln (0.90) /6.2 * (10 ^ -4)

t = 170 min

Which means it will take 170 minutes.

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Al drew a line that was Three-fourths of an inch long. He decided to shorten it and erased One-fourth of an inch of the line. Ho
ivanzaharov [21]

Answer:

The remaining line is 1/2 of an inch

Step-by-step explanation:

3/4-1/4 will give you 2/4 which is easily simplified to 1/2

I hope this helps you :)

6 0
3 years ago
What is the correct reason for statement 1
olya-2409 [2.1K]

Answer:

Given

Step-by-step explanation:

You are given the information about the angles under the line given.

6 0
3 years ago
Allen's unpaid credit card balance was $3,426.67 his APR is 16.8% what is his new balance after he makes one new transaction for
gayaneshka [121]
Your answer would be $3,395.00. Hope this helps! :)
5 0
3 years ago
Read 2 more answers
(75 points and brainliest for correct answer no explanation needed just answer.) NEED HELP
Alecsey [184]

I believe that the answeres are either (The functions have the same shape. The Y intercept of y= |x| is 0, and the y-intercept of the second function is -9) or ( the two functions are the same) my best guess is  (The functions have the same shape. The Y intercept of y= |x| is 0, and the y-intercept of the second function is -9)

7 0
3 years ago
Solve x^2 + x - 12 = 0
bogdanovich [222]

Answer:

x₁ = -4

x₂ = 3

Step-by-step explanation:

x²+ x + 12 = 0

x = {-1±√((1²)-(4*1*-12))} / (2*1)

x = {-1±√(1+48)} / 2

x = {-1±√49} / 2

x = {-1±7} / 2

x₁ = {-1-7} / 2 = -8/2 = -4

x₂ = {-1+7} / 2 = 6/2 = 3

Check:

x₁

-4² + (-4) - 12 = 0

16 - 4 - 12 = 0

x₂

3² + 3 - 12 = 0

9 + 3 - 12 = 0

6 0
2 years ago
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