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The $K_c$ for the equation shown below is $0.543$ at $425^@"C"$. What is the value of $K_c$ for the reverse equation?
The thing to remember here is that the equilibrium constant of the forward reaction is always equal to the inverse of the equilibrium constant of the reverse reaction or vice...
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Mikaela is competing in a race. She runs 5 kilometers in .5 hour. How many kilometers can Mikaela run in 1 hr?
If she runs $5"km"$ in half an hour then she could run $10"km"$ in 1 hour. You must assume that she can maintain this speed otherwise the prediction is not...
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A train made a trip to New York and back. On the trip there it traveled 22 mph and on the return trip it went 10 mph. How long did the trip there take if the return trip took 11 hours?
Part 1: determining the distance traveled We are told the return trip took 11 hours at a speed of 10 mph. $"distance" = 11 cancel( " hours") xx (10 "...
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Lauren's SUV was detected exceeding the posted speed limit of 60 kilometers per hour, how many kilometers per hour would she have been traveling over the limit if she had covered a distance of 10 kilometers in 5 minutes?
First convert her speed into km/hr. There are 60 min in 1 hr so 5 min = 5/60 = 1/12 of an hour. So her speed will be dist/time =...
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What is the speed for a car that went a distance of 125 kilometers in 2 hours time?
Given, $d = 125"km" * (10^3"m")/"km" approx 1.25*10^5"m"$ $t = 2"h" * (3600"s")/"h" approx 7.2*10^3"s"$ Recall, $bars = d/t$ Hence, $bars = d/t approx (17.4"m")/"s"$ is the average speed of...
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A truck driver takes 3 hours to drive the first 210 miles of a trip. He then takes a 1 hour rest at a rest stop. He drives the final 200 miles of the trip in 4 hours. What is the average speed for the entire trip?
avg. speed=total distance/total time. Therefore add the total distance and divide it by total time. You must also add the time rested as the question asks for avg. speed of...
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A delivery truck traveled 133 miles in 3.5 hours. What was the average speed of the delivery truck in miles per hour?
Average velocity=Total distance travelled / Total time taken In other words $A_(avg)=(distance)/(time)$ Sorry! its total distance and total time So, $rarrA_(avg)=133/3.5=38mph$ $mph=mil$$es$ $per$ $hour$
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It took a sled dog team 8.5 hours to travel 161.5 kilometers. What was the average speed of the sled dog team in kilometers per hour?
This is a ratio, also called a quotient, and it is a division problem. To obtain the units desired of km/h you simply divided the given value of kilometers by...
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A tourist calculated that if he walks to the railroad station with a speed of 4 mph, he’ll miss the train by half an hour, but if he walks with a speed of 5 mph, he’ll reach the station 6 minutes before the departure of the train ?
We can use the formula: $"speed" = ("distance")/("time")$ To create two equations we can use to solve this problem. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We know that the tourist must reach the...
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An automobile traveling 90 km/h overtakes a 1.5-km-long train traveling in the same direction on a track parallel to the road. The train speed is 70 km/h,
- how long does it take the car to pass it
- how far will the car have traveled in that time?
$sf((a))$ The velocity of the car relative to the train = $sf(90-70=20color(white)(x)"km/hr")$. To pass the train it needs to cover a distance of 1.5 km. $sf(t=d/v=1.5/20=0.075color(white)(x)"hr")$ $sf(t=0.075xx60=4.5color(white)(x)"min")$ $sf((b))$ Relative to...
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