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For which of the following substances are dispersion forces the only intermolecular force? $\text{O } H_2O$ $\text{O } NaCl$ $\text{O } CH_3Cl$ $\text{O } HF$ $\text{O } CF_4$

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Question 6 What is the mass of potassium in 1.111 g of potassium carbonate ($K_2CO_3$)? Type only correctly rounded number, for example: 5.43 1 pts

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High intracellular calcium as a result of cellular damage leads to which of the following? A Activation of ATP B Activation of Caspase -8 C Hypertrophy D Activation of destructive enzymes E Activation of apoptosis

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Why is Indonesia the preferred country for nickel mining? Select all answer choices that apply Why is Indonesia the preferred country for nickel mining? Select all answer choices that apply It is less expensive to mine nickel ore in Indonesia Nickel ore is found closer to the surface in Indonesia than in other countries There are no regulatory restrictions for nickel mining in Indonesia There are no environmental concerns mining nickel ore in Indonesia

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Your company is considering two alternatives, which may increase plant capacity for manufacturing microchips. Prepare cash flow diagrams and evaluate which one should be selected on the basis of a present worth comparison at an interest rate of 12% per year? Project A B Initial Investment -45.000 $ -58.000 $ Maintenance cost -8.000 $/year -4.000 $/year Salvage value 2.000 $ 12.000 $ Life 5 years 5 years

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7. Does a firm's price equal the minimum of average total cost in the short run, in the long run, or both? Explain./2 8. You go out to the best restaurant in town and order a lobster dinner for $40. After eating half of the lobster, you realize that you are quite full. Your date wants you to finish your dinner, because you can't take it home and because \"you've already paid for it.\" What should you do? Relate your answer to the material in this chapter. /2 9. Consider total cost and total revenue given in the table below: /6 Quantity 0 1 2 3 4 5 6 7 Total Cost $8 $9 $10 $11 $13 $19 $27 $37 Total Revenue 0 8 16 24 32 40 48 56 a. Calculate profit for each quantity. How much should the firm produce to maximize profit? b. Calculate marginal revenue and marginal cost for each quantity. Graph them. (Hint: Put the points between whole numbers. For example, the marginal cost between 2 and 3 should be graphed at 2.5.) At what quantity do these curves cross? How does this relate to your answer to part (a)? c. Can you tell whether this firm is in a competitive industry? If so, can you tell whether the industry is in a long-run equilibrium?

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Using arrow-pushing formulism, give reasonable mechanisms for any two of following reactions shown below. a) H-Br, heat $R_2O_2$ (peroxide) Br CH$_3$ONa/CH$_3$OH b) Cl H$_3$C OH N CH$_3$ H$^+$, H$_2$O H$_3$C c) H$_3$C OCH$_3$

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Part A An electron is traveling through a uniform electric field. The field is constant and given by $\vec{E} = (2.00 \times 10^{-11} \text{N/C}) \hat{i} - (1.20 \times 10^{-11} \text{N/C}) \hat{j}$. At $t = 0$, the electron is at the origin and traveling in the $x$ direction with a speed of 1.80 m/s. What is its position 1.00 s later? x = m Incorrect; Try Again; 4 attempts remaining Part B y = m

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A flood control project has a construction cost during the first year of $10 million, during the second year $6 million, and during the third year $2 million. It is completed at the end of the third year and thereafter incurs an annual operating cost of $200,000 per year. Benefits from the project also begin during the fourth year and are valued at $1.5 million in that year, growing at 2% compound rate of increase out to the planning horizon (analyze period) of 50 years. The interest rate is taken to be 6%. Carefully draw the cash flow diagram. What is the present worth of the cost? What is the present worth of benefit? Is this viable project economically?

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e water layer. $P_{bot} = 2.06 \times 10^5 Pa$ LEARN MORE REMARKS The weight of the atmosphere results in $P_0$ at the surface of the oil layer. Then the weight of the oil and the weight of the water combine to create the pressure at the bottom. QUESTION Why does air pressure decrease with increasing altitude? (Select all that apply.) There is more air below to push up more strongly. The weight of the air below is smaller. Colder air is less dense. Less air above pushes down. Hot air rises. The weight of the air above is smaller. PRACTICE IT Use the worked example above to help you solve this problem. In a huge oil tanker, salt water has flooded an oil tank to a depth of $h_w = 4.75$ m. On top of the water is a layer of oil, $h_o = 8.40$ m deep, as in the cross-sectional view of the tank as shown in the figure. The oil has a density of $0.700 g/cm^3$. Find the pressure at the bottom of the tank. (Take $1,025 kg/m^3$ as the density of salt water) $2.06 \times 10$ Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. Pa EXERCISE HINTS: GETTING STARTED I'M STUCK Calculate the pressure on the top lid of a chest buried under 3.55 meters of mud with density $1.75 \times 10^3 kg/m^3$ at the bottom of a 12.5-m-deep lake.

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jose f.