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jennifer bar-n

jennifer b.

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40. The projected strength of the economy is rated on an equally weighted five point scale (20% weight each), and the expected returns for Wave Shredder Inc. are 9.5%, 5.0%, 12%, 3.5% and 7% in the different states of the economy. If the standard deviation is 2.0%, how many of these returns fall within 1 standard deviation of the expected return? (Hint: First find the average expected return.) A. 1 B. 2 C. 3 D. 4 E. 5

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Evaluate. \begin{equation*} \int_1^5 \frac{2x+1}{x^2+x-1} dx \end{equation*} \begin{equation*} \int_1^5 \frac{2x+1}{x^2+x-1} dx = \boxed{} \end{equation*} (Type an exact answer.)

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2. In a mixture of helium and nitrogen, the helium exerts a pressure of \( 0.65 \mathrm{~atm} \) and the nitrogen exerts a pressure of \( 1.50 \mathrm{~atm} \). What is the pressure exerted by the mixture of the two gases? 3. Water vapor is water in the gaseous state. A gas that is collected over water will become saturated with water molecules because the water exerts a vapor pressure. The higher the temperature of the liquid water, the higher is its vapor pressure. a. Dalton's Law tells us that the total pressure of a gaseous mixture is equal to the sum of the pressure exerted by each gas. What are the 2 gases present in the test tube after the \( \mathrm{Mg} \) has reacted with the \( \mathrm{HCl} \) ? b. Write a general equation for Dalton's Law: 4. In an experiment, hydrogen gas is collected over water. The total pressure of the hydrogen plus water vapor equals 762.5 torr at \( 22.5^{\circ} \mathrm{C} \). What is the pressure exerted by the "dry" hydrogen gas? (see Table I for the vapor pressure of water). 73

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Calculate the quotient below, and express the result with the correct number of significant figures.\\ \frac{35.7}{6.2} =

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What is the change in length of a 3.50 cm long column of mercury if its temperature changes from 34.2°C to 40.6°C, assuming the mercury is constrained to a cylinder but unconstrained in length? Your answer will show why thermometers contain bulbs at the bottom instead of simple columns of liquid. The coefficient of volume expansion for mercury is 1.80 x 10^-4 1/°C. Part 1: Volume expansion is defined for liquids, but linear and area expansion are not, as a liquid’s changes in linear dimensions and area depend on the shape of its container. Correct answer, well done. Marks for this submission: 0.250/0.250. Accounting for previous tries, this gives 0.125/0.250. Part 2: What is the change in length of the 3.50 cm long column of mercury? 4.03 x 10^-4 m

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An experimental approach is often used in psychological research when it would be unethical or impractical to use a correlational approach. True False

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Packit Corporation has an $80,000 note that carries an annual interest rate of 10%. If the amount of the total interest due on the note is equal to $8,000, what is the duration of the note in months? 2 months 6 months 8 months 12 months

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In the simplex tableau given below,what is the value of y in the basic solution? T 2 5 y s1 82 m 0 3 5 0 6 0 0 0 6 36 5 4 0 0 4 Answer:

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Q4. Answer to the following questions on mass and energy balances. a) Consider separating the slurry (10 wt%) into a concentrated one and a diluted one (1.0 wt%). When 95.0% of the total particles are in the concentrated one, what is the concentration in the concentrated one? b) Consider a process of drying a powder (5.0 g/s, 25°C) containing 30 wt% of water and 70 wt% of solid using a dryer (2.0 kW) at 100°C. The outlet temperature is 100°C for both the powder (solid & water) and water vapor. What is the mass flow (wo) and water content (xo) of the powder at the outlet? The specific heat capacities of the solid and water are Cp,s = 750 and Cp,w = 4200 [J/kg·K], respectively. The enthalpy of vaporization of water is ΔHw = 2.26 × 10^6 [J/kg].

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What should management do if there are variances determined for the month? Investigate in detail all variances. Investigate only the unfavorable variances. Wait until the end of the year to investigate the variances. Use management by exception to determine which variance to investigate. Report the variances to the SEC.

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