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1. One mole of which gas has the greatest density at STP? A) CO2 B) Ar C) Kr D) All three gases have the same density.
2. Calculate the root mean square velocity for the O2 molecules in a sample of O2 gas at 11.8°C. (R = 8.3145 J/K mol) A) 95.94 m/s B) 14.89 m/s C) 471.1 m/s D) 272.1 m/s
3. Which of the following properties of a real gas is related to the b coefficient in the van der Waals equation? A) Real gases consist of molecules or atoms that have volume. B) The average speed of the molecules of a real gas increases with temperature. C) There are attractive forces between atoms or molecules of a real gas. D) The rate of effusion of a gas is inversely proportional to the square root of the molecular weight of the gas.
4. Aqueous solutions of sodium sulfide and copper(II) chloride are mixed together. Which statement is correct? a . A) Both NaCl and CuS precipitate from solution. B) No reaction will occur. C) CuS will precipitate from solution. D) NaCl will precipitate from solution.
5. Which statement is true of a process in which one mole of a gas is expanded from state A to state B? a . A) When the gas expands from state A to state B, the surroundings are doing work on the system B) The amount of work done in the process must be the same, regardless of the path. C) It is not possible to have more than one path for a change of state. D) The final volume of the gas will depend on the path taken.
A random sample of 740 items shows that 207 have this characteristic. With a .05 probability of committing a Type I error, test the hypothesis.
Write down the expression for the generating function of the distribution of the size of thepopulation at time n ∈ N0. (Note: you can use n-fold composition of functions.)
How much wire should be used for the square in order to maximize the total area?
FInd the circulation of F= round the circle C with center at origin and radius 3 traversed counter clockwise.
Rearrange the equation (x-1) (x-1) (x-1)=y to solve for x.
Assume that if toothbrushes are sold at x cents each and dental floss is sold at y 50000 70000 cents per roll, then the demand function is for toothbrushes and for xy xy dental floss. What are the selling prices that correspond to maximum profit?
A 12-ft ladder leans against the side of a house. The bottom of the ladder is 7ft from the side of the house. How high is the top of the ladder from the ground? If necessary, round your answer to the nearest tenth.
point A has the cartesian coordinates of (8,5)while point Bhas the cartesian coordinate of (4,11). with point A as the origin,what would be the relative coordinates of point B?
n solving x2 = 16 we may write x2 - 16 = 0 and complete the solution by factoring. This gives us x = 4 and x = -4. Therefore, the principal square root of 16.
Find the area of the region bounded by the parabola y = 5x^2, the tangent line to this parabola at (4, 80), and the x-axis.
(a) Make a scatter diagram of the data using the Resistance as the independent variable and Power as the dependent variable. (b) Use your calculator (DesmosDesmos or Excel) to find quadratic (2nd degree), cubic (3rd degree) and quartic (4thdegree) re..
The preferred stock of Gapers Inc. pays an annual dividend of $6.50. What is the price of the preferred stock if the required return.
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