phil1417

47. Which exception to the octet rule is shown by this molecule? 

How much does a spring with a spring constant of 650 N/m need to be compressed in order to store 20.0 J of elastic potential energy?

What is the spring constant of a spring that is compressed 0.2 m and has 1.50 J of elastic potential energy stored in it?

Determine the elastic potential energy stored in a spring with a spring constant of 125 N/m that is compressed 0.75 m.

How much does a spring with a spring constant of 400 N/m need to be compressed in order to store 8.5 J of elastic potential energy?

1. Jack is trying to use a graduated cylinder to measure volume. He puts 75 ml of water into the graduated cylinder. He then places his object into the graduated cylinder. The water level is now 107 ml. What is the volume of Jack's object? How did you figure this out? (Show your work)

7. Ch. 11 Problems and Applications Q5

Four roommates are planning to spend the weekend in their dorm watching old movies, and they are debating how many to watch. Here is their willingness to pay for each film:

1. 6. A 100 kg/h ethanol-methanol stream is to be separated in a distillation column. The feed has 40% ethanol, and the distillate has 90% methanol. The flow rate of the bottom stream product is 40kg / h Determine the percentage of methanol in the bottom stream. Perform degree of freedom analysis. Draw the diagram. Write the inlet and outlet flow rate values in different system of units. Suggest any other methods applicale to separate ethanol-methanol stream. How the ethanol- methanol stream is separated in distillation column?