WHAT IS THE ANSWER FOR THESE TWO QUESTIONS ? IF YOU NEED MORE INFO LEAVE IT IN T
ID: 858612 • Letter: W
Question
WHAT IS THE ANSWER FOR THESE TWO QUESTIONS ?
IF YOU NEED MORE INFO LEAVE IT IN THE COMMENTS
TIME SENSITIVE
Learning Goal:
To understand how to use integrated rate laws to solve for concentration.
A car starts at mile marker 145 on a highway and drives at 55 mi/hr in the direction of decreasing marker numbers. What mile marker will the car reach after 2 hours?
This problem can easily be solved by calculating how far the car travels and subtracting that distance from the starting marker of 145.
55 mi/hr
Explanation / Answer
from the units of rate constant it is a first order rate of reaction
K1 = 2.303/t log(initial/final)
5.2*10^-3 = 2.303/(6*60) log(0.1/final)
final = 0.01538 M or 1.54*10^-2 M
...................................................
K = [initial - final]/t
2.8*10^-4 = initial - 9*10^-2/80
initial = 11.24*10^-2 M or 11.2*10^-2 M or 0.112 M
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