Question

<HW3 (Chapter 14) Introduction to Integrated Rate Laws < 19 of 25 > A Review Constants Periodic Table Learning Goal: To understand how to use integrated rate laws to solve for concentration. Part A 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? The rate constant for a certain reaction is k = 6.20-10-35-1 If the initial reactant concentration was 0.950 M, what will the concentration be after 6.00 minutes? Express your answer with the appropriate units. This problem can easily be solved by calculating how far the car travels and subtracting that distance from the starting marker of View Available Hint(s) 145. 55 mi/hr x 2 hr = 110 miles traveled OTH HÅR O ? mol milemarker 145 – 110 miles = milemarker 35 If we were to write a formula for this calculation, we might express it as follows: milemarker = milemarkero - (speed x time) where milemarker is the current milemarker and milemarkero is the initial milemarker. [A]: = 0.00069 L Submit Previous Answers Figure (< 1 of 2 X Incorrect; Try Again; One attempt remaining

Answer 1

We have a relation - d[A] = kraj' while intigrating both sides we get dTAJ ar In [AJA = In [ 40 ] -kt = ln [oopso] - 6.20x10" x 6X60 = -0.051 - 0.232 = -2.283 [A3+ = ē 2.283 | [AJE? 001019 molli