Calculate the average speed, collision frequency, average free
travel and the total number of shocks for...
Calculate the average speed, collision frequency, average free
travel and the total number of shocks for 1 mole of nitrogen found
in a 0.5 L container at a temperature of 280 K. (σ = 0.4
nm2)
3. Calculate the collision frequency, binary collision number,
mean free path, and viscosity for Ar gas at 298 K and 1.0 atm
pressure. The collision diameter of Ar is 3.64 Å. Assume that Ar
behaves ideally under these conditions.
a) Calculate the mean free path of a gas with an average speed
of 10 m/s with collision frequency of 10 s-1. b) Calculate the mean
free path of a gas with a density of 10 particles/cm3 and molecular
diameter of 0.1 nm. c) Calculate the mean free path of a gas in a 1
cm3 container with 10 molecules and molecular diameter of 0.1
nm.
Calculate the collision frequency for the N2 –
N2 collisions, N2 – O2 collisions and
O2 – O2 collisions in air at 298 k and 0.95
bar pressure. Assume air is 80 % N2 and 20% O2 by mass and that σ =
0.43 nm2 for both molecules.
23 The relative frequency is the frequency in each
class divided by the total number of observations.
A true
B false
24, The scatter plot can visually show the
relationship between two variables.
A false
B True
25 Ratio measurement scales indicate both rank and
distance from a natural zero.
A true
B false
26
A time series diagram is a bar chart that displays the
frequency of defect causes and is used to separate the "vital few"
from the...
Calculate the number average degree of polymerization and the
number average molecular weight of an equimolar mixture of adipic
cid and methylene diamond for the extents of reaction 0.5; 0.8;
0.9; 0.95 and 0.995.
A man on a bike of total mass 100 kg, is free-wheeling at a
constant speed of 15 ms-1 down a hill with a gradient of
10%. He wants to slow down to a safer speed, so he applies the
brake lightly to produce a constant braking force of 84 N. The air
resistance is proportional to the square of the speed.
(a) Calculate the deceleration when his speed has dropped to 12
ms-1.
(b) At what speed will his...
Using Excel
Data in Travel file shows the average number of rooms in a
variety of U.S cities and the average room rate and the average
amount spent on entertainment. A company that run events for hotel
residents wants to predict the amount spent on entertainment based
on room rate and number of rooms.
Run the regression analysis. Are the coefficients statistically
significant? Do we need to drop one of these variable? Which
variable? Interpret the slope of the estimated...
A basketball player’s free-throw average is calculated as the
average number of made shots relative to total attempts. Suppose
Shaquille currently has a 25% free-throw average and is a very
consistent (if not a very good) shooter. During today’s game, this
player will be at shoot exactly nine free throws (a) What is the
probability that he ends up with three made shots? (b) What is the
probability he ends up with no made shots? (c) What is the
probability...
If possible, calculate total profits given a price of $80, an
average total cost of $30, and an output of 5.
If price is above average total cost, is the firm making a
profit or loss and should it operate or shut down?
None of the above.
Profit and it should operate.
Loss and it should shut down to minimize losses.
Loss and it should operate to minimize losses.
Suppose that a firm is making a profit of $50 million...