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state exactly how you would use UV-visible spectrophotometer and an FTIR spectrophotometer to determine whether it is MDMA (3,4-methylenedioxymethamphetamine) or sucrose in the bag

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Consumer Mathematics Finding the future value of an annuity Kareem wants to save money to purchase a car. He buys an annuity with yearly payments that earn 2% interest, compounded annually. Payments will be made at the end of each year. Find the total value of the annuity in 6 years if each yearly payment is $2939. Do not round any intermediate computations, and round your final answer to the nearest cent. If necessary, refer to the list of financial formulas.

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Question 1 [20] Spherical particles (diameter = 0.2mm, SG = 1.3) are produced in a process at a rate of 50 000 kg crystals/h. These crystals are then fed to a thickener at a slurry concentration of 300 kg solids/m³ slurry. The settling velocity $u_c$ as a ratio of the terminal settling velocity is given by the following equation $\frac{u_H}{u_T} = \epsilon^{4.2}$ where $\epsilon$ porosity of the slurry ($\epsilon = 1 - \frac{volume\ of\ solids}{total\ volume}$) The SG of the fluid is 1.0 and has a viscosity of 1 cP. Determine the diameter of the thickener when an underflow concentration of 1000 kg/m³ is required. Use a scale factor of 1.2.

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The heart of the economic problem is to increase leisure No answer text provided. allocate limited resources among unlimited uses. increase our standard of living. provide for full employment.

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ou are the manager of a firm that receives revenues of $60,000 per year from product X and $70,000 per year from product Y. The

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What are the 5 V's of big data? Explain them with an example.

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5 2 points True or False: Vitamins and minerals offer great sources of usable energy. True False

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The table below represents the demand and supply schedules for cement in Canada and United States. (Assume these are only 2 countries trading in cement). Price per Quantity Quantity 50 kg bag demanded in supplied in Quantity demanded in Quantity supplied in of cement Canada Canada United States United States (in US$) ('000 bags) ('000 bags) ('000 bags) ('000 bags) 80 200 20 200 50 160 170 40 170 100 240 140 60 140 140 320 120 80 120 160 400 100 100 100 180 480 80 120 80 200 560 60 140 60 220 640 40 160 40 240 a) If there is no trade between these two countries, what are the equilibrium price and the equilibrium quantity in Canada? b) If there is no trade between these countries, what are the equilibrium price and the equilibrium quantity in the United States? c) If Canada and the United States trade with each other, what will be the equilibrium price in the world for cement? d) If Canada and the United States trade with each other, which country will export cement and how much?

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7) Epidemiologists have found a new communicable disease running rampant in colleges. They estimate that t days after the disease is first observed on the campus, the percent of the population infected by the disease is approximated by $p(t) = 0.02t^3 - 0.001t^4$ for $0 \le t \le 20$ a) Find $p'(t)$ b) Find the critical numbers c) After how many days is the percent of the population infected a maximum? d) What is the Maximum percent of the population infected?

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2.1. The figure below shows a closed tank that contains gasoline floating on water. Calculate the air pressure above the gasoline. The container is vented to the local atmosphere. What is the absolute pressure at the surface of the mercury and at the bottom of the container (kPa)? Assume the conditions of the standard atmosphere prevail for pressure. Use sg = 13.54 for the mercury. (5)

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