Please answer both parts if you can :)

The rato constant for a certain reaction is k-620x10-9- the initial reactant concentration was 0950 M. what will the concentration be ahor 7.00 minutes? Express your answer with the appropriate units. View Available Hint() Learning Goal: A car starts at mile marker 145 on a highway and drives at 55 mi/hr in the direction of decreasing marker numbers. What mlemarker 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 x 2 hr 110 miles traveled milemarker 145 -110 miles -milemarker 35 (A) - Value Units Figure 10f2> Submit Previous Answers peronter * Incorrect; Try Again; 2 attempts remaining Part 8 IAL A roro order reaction has a constant rate of 140x104 M/s er 560 seconds the concentration has dropped to 300x10- M. was the initial concentration? Express your answer with the appropriate units. View Available Hints)