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Fresno Board Games manufactures and sells several different board games online and through department stores nationwide. Fresnos most popular game, Cabestrillo Cinco!, is played with 5 six-sided... Calculate the energy in eV of an X-ray photon of frequency 3.0 10 18 Hz. To answer questions you will need these values: Speed of light in a vacuum c = 3.00 10 8 m s 1 Planck constant h = 6.63 10... Copper(ii) sulfate crystals exist as the pentahydrate, CuSO 4 .5H 2 O. It is a salt hydrate. If it is heated quite strongly, the water of crystallisation is driven off and the anhydrous salt remains.... a. Outline the theory of the PET scanner. b. It is suggested that a scanner could be designed using the annihilation of a proton and an antiproton. Calculate: i. The energy released in the... A particle of mass 2 kg is fired up a smooth slope of length 4m, with initial speed 10ms -1 , which is inclined at 30 above the horizontal. The bottom of the slope is at the same level as horizontal... The diagram shows the arrangement of the outer electrons only in a molecule of ethanoic acid. a. Name the different elements found in this compound. b. What is the total number of atoms present in... A small generator is labelled as having an output of 2 kW, 230 V a.c. (at constant frequency). It is used to provide emergency lighting for a large building in the event of a breakdown of the mains... a. A sound wave travelling through air can be represented as shown in the diagram. Which distance, A, B, C, or D, represents: i. one wavelength? ii. The amplitude of the wave? b. The cone of a... A medical researcher is conducting a study to test the effectiveness of a drug designed to lower cholesterol levels. She randomly selects a sample of 100 males and 100 females. The electron micrograph on page 25 shows part of a secretory cell from the pancreas. The secretory vesicles are Golgi vesicles and appear as dark round structures. The magnification is 8000. a. Copy... Spud, Inc., a manufacturer of gourmet snacks, employs activity-based costing. The budgeted data for each of the activity cost pools is provided below for the year 2022. Estimated Estimated Use of... The activity of the enzyme amylase can be measured at a particular temperature by placing a sample into a Petri dish containing starch-agar (a starch-agar plate). Starch-agar is a jelly containing... Two inhibitors of the same enzyme, inhibitor A and inhibitor B, were investigated to discover if they were competitive or non-competitive. In order to do this, the rate of reaction of the enzyme was... If a 10 cm long piece of string was packed into a 5 cm long tube, the packing ratio would be 2 (2 cm of string per cm of tube). The packing ratio is a useful measure of the degree of compactness... Figure 7.31d on page 148 shows a sieve element with red-stained triangles of callose at each end. These triangles indicate the positions of the sieve plates. a. Assuming the magnification of the... Carbon dioxide is transported in the blood in various forms. a. Describe how carbon dioxide molecules reach red blood cells from respiring cells. The diagram below shows part of a capillary network... Figure 8.28, page 176, shows the pressure changes in the left atrium, left ventricle and aorta throughout two cardiac cycles. Make a copy of this diagram. Figure 8.28 a. i. How long does one heart... a. State three ways in which HIV is transmitted. The table shows statistics published by UNAIDS for four regions of the world and the global totals for HIV/AIDS in 2010. b. Suggest three sources of... A student made drawings of four blood cells as shown in the figure. The correct identification of the cells is: granular cytoplasm 2 nucleus nucleus nucleus 3. Find a news report concerning drug testing of athletes. Summarize how the testing is being used, and discuss whether the testing is reliable. The table below shows the blood cell counts for four young female patients at a hospital. Each patient has a different medical condition. Use the data in the table above and Table 11.1 on page 231 to... For this question you need two sheets of graph paper. The light micrographs below are a a cross section of a young root, and b a representative part of a young stem of Ranunculus (buttercup). a. Name... Rearrange the statements below to produce a flow diagram showing the steps involved in producing bacteria capable of synthesising a human protein such as human growth hormone (hGH). 1. Insert the... Use the Periodic Table shown below to help you. Write isotopic symbols for the following neutral atoms: The Periodic Table of the Elements a. Bromine-81 b. Calcium-44 c. Iron-58 d. Palladium-110.... The table shows the atomic number and boiling points of some noble gases. a. Use ideas about forces between atoms to explain this trend in boiling points. b. Xenon forms a number of covalently bonded... The table lists bond lengths and bond energies of some hydrogen halides. a. What is the relationship between the bond length and the bond energy for these hydrogen halides? b. Suggest why the bond... Go to the website for the U.S. Census Bureau and investigate the census conducted every 10 years. How and when will data be collected for the next census? Are any significant changes in the... The Vice Presidents salary is currently 42% less than the Presidents salary, so the Vice Presidents salary is ____% of the Presidents salary. Of versus More Than. Fill in the blanks in Exercises.... Look at the Periodic Table in Figure 10.2. Figure 10.2 a. Which element is found in Period 4, Group 17? b. The relative atomic masses of tellurium (Te) and iodine (I) are 128 and 127, respectively.... a. Draw a diagram of an electrochemical cell consisting of a Cr 3+ /Cr half-cell and a Cl 2 /Cl half-cell. b. Use the data in Appendix 2 to calculate the cell voltage. c. Which half-cell is the... State the direction of the electron flow in the electrochemical cells represented by the following pairs of half-equations. Use the data in Appendix 2 to help you. a. F 2 + 2e 2F and Mn 2+ + 2e ... Use the data in Appendix 2 to predict whether or not the following reactions are feasible. If a reaction does occur, write a balanced equation for it. a. Can MnO 4 ions oxidise Cl ions to Cl 2 in... Suggest a suitable reagent that can carry out each of the following oxidations or reductions. Use the data in Appendix 2 to help you. a. The reduction of Zn 2+ ions to Zn. b. The oxidation of Br ... se the cell voltage method described in Worked examples 6 and 7 above to answer question 21, parts a to d. Data From Question 21: Use the data in Appendix 2 (page 474) to predict whether or not the... Use the data in Appendix 2 to answer these questions. a. Of the ions Ag + , Cr2 + and Fe 2+ , which one needs the strongest reducing agent to reduce it to metal atoms? b. Of the atoms Ag, Cr and Fe,... The asymmetric bar shown has a weight of 7.6 N and a centre of gravity that is 0.040 m from the wider end, on which there is a load of 3.3 N. It is pivoted a distance of 0.060 m from its centre of... Find a journal article that refers to the use of analysis of variance. Identify the test being used and describe the conclusion. Did the test result in rejection of the existence of equal means? What... A medical researcher wants to test the claim that healthy adults have a mean body temperature of 98.6F. A girl is riding a bicycle at a constant velocity of 3.0 m s 1 along a straight road. At time t = 0, she passes her brother sitting on a stationary bicycle. At time t = 0, the boy sets off to catch... At 10 C ice changes to water. H 2 O(s) H 2 O(l) H = +6.01 kJ mol 1 a. Explain why the entropy change of the system is positive. b. The entropy change for the system is +22.0 J K 1 mol 1 . Calculate... Peroxodisulfate ions, S 2 O 8 2 , react with iodide ions in aqueous solution to form iodine and sulfate ions. S 2 O 8 2 (aq) + 2I (aq) 2SO 4 2 (aq) + I 2 (aq) equation 1 The initial rates of... a. Define linear momentum. b. Determine the base units of linear momentum in the SI system. c. A car of mass 900 kg starting from rest has a constant acceleration of 3.5 m s 2 . Calculate its... Diffusion in a gas is the random motion of particles involved in the net movement of a substance from an area of high concentration to an area of low concentration. The process of diffusion also... A 20.0 g lead bullet leaves a rifle at a temperature of 47.0C and travels at a speed of 5.00 10 2 m/s until it hits a 6.0 kg block of ice at 0C that is initially at rest on a frictionless surface.... Suppose the switch in Fig. 20.21 has been closed for a long time but is suddenly opened at t = t 0 . Which of these graphs best represents the current in coil 2 as a function of time? I 2 is positive... A student is trying to make an accurate measurement of the wavelength of green light from a mercury lamp. The wavelength of this light is 546 nm. Using a double-slit of separation 0.50 mm, the... If 250 adults are randomly selected, find the probability that 15 or fewer of them are left-handed. Does the result of 15 lefthanded adults appear to be unusually low? A 4700 F capacitor has a p.d. of 12 V across its terminals. It is connected to a resistor and the charge leaks away through the resistor in 2.5 s. a. Calculate the energy stored on the capacitor. b.... When electromagnetic radiation of wavelength 2000 nm is incident on a metal surface, the maximum kinetic energy of the electrons released is found to be 4.0 10 20 J. Calculate the work function of... a. State Hubbles law. b. The recession speed v against distance d graph for some galaxies is shown. Determine the Hubble constant from this graph. Explain your answer. c. The Big Bang occurred some... a. Define the luminosity of a star. b. A red giant is a star bigger than our Sun. Explain how the surface of a red giant star can be cooler than the Sun, yet have a luminosity much greater than the... Light from a galaxy is passed through a diffraction grating. The diagram shows part of the emission spectrum. The strong emission spectral line has wavelength 662 nm. a. Calculate the energy of a... A company is preparing invoices to send to their customers. Before they are sent, they are checked and the daily number of mistakes found over a two-week period are recorded. Test, at the 5% level of... When conducting hypothesis tests, you need to consider a different set of critical values for two-tailed tests than for one-tailed tests. Does It Make Sense? For Exercise, determine whether the... The fugacity coefficient of a certain gas at 200 K and 50 bar is 0.72. Calculate the difference of its molar Gibbs energy from that of a perfect gas in the same state. Find the drift speed of a particle of radius 20 m and density 1750 kg m 3 which is settling from suspension in water (density 1000 kg m 3 ) under the influence of gravity alone. The viscosity of... A person stands on the ball of one foot. The normal force due to the ground pushing up on the ball of the foot has magnitude 750 N. Ignore the weight of the foot itself. The other significant forces... Two vectors, each of magnitude 4.0 N, are inclined at a small angle below the horizontal, as shown. Let Sketch the direction of C(Vector) and estimate its magnitude. (The grid is 1 N on a side.) C =... The histogram in Figure 4.9 shows the F-scale measurements of intensities of 490 tornadoes from recent years. (The F-scale runs from 0 to 5; a higher number indicates a stronger tornado.) Does It... Two cross-country running teams, called the Gazelles and the Cheetahs, participated in a (hypothetical) study in which 50% of the Gazelles and 65% of the Cheetahs used weight training to supplement a... Exercise 18 in Section 3.1 required the construction of a frequency table for a list of body temperatures(in F) of randomly selected subjects. Use that frequency table to construct the corresponding... The effective rate constant for a gaseous reaction which has a LindemannHinshelwood mechanism is 2.50 10 4 s 1 at 1.30 kPa and 2.10 10 5 s 1 at 12Pa. Calculate the rate constant for the activation... (a) What are the units usually used to express the rates of reactions occurring in solution? (b) As the temperature increases, does the reaction rate increase or decrease? (c) As a reaction proceeds,... Aldol condensation of butan-2-one leads to a mixture of two enones (ignoring double-bond stereochemistry). Draw them. The refractive index of CCl 4 is n D = 1.4601 and the density is 1.594 g/ml. Use the Lorenz Lorentz equation to estimate the polarizability of CCl 4 . Compare to the literature value /4 0 = 1.25 10... The molar polarization P M of methanol decreases from about 36 to 33 cm 3 /mol on increasing the temperature from 298 to 333 K. Use the Debye equation to estimate the polarizability and dipole moment... The sulfate ion concentration in natural water can be determined by measuring the turbidity that results when an excess of BaCl 2 is added to a measured quantity of the sample. A turbidimeter, the... The chromium in a series of steel samples was determined by ICP emission spectroscopy. The spectrometer was calibrated with a series of standards containing 0, 2.0, 4.0, 6.0, and 8.0 g K 2 Cr 2 O 7... The phenol content of water downstream from a coking furnace was determined by coulometric analysis. A 100- mL sample was rendered slightly acidic, and an excess of KBr was introduced. To produce Br... Name the families that contain the following species: a. Sunflowers, dandelions, and daisies b. Milkweeds c. Potato, tomato, and tobacco d. Mints and lavender e. Coffea (coffee) On the four drawings of deformed rocks in Fig. G-41, indicate the orientations of the principal strain axes. Below each drawing indicate the relative lengths of the axes (e.g., 1 + e 1 > 1 + e 2 = 1... FigureG-40is aphotographofanexposedbedding plane containing deformed portions of several trilobites. 1. Determine the strain ellipse for this rock. 2. Determine the 1 + e 1 : 1 + e 2 ratio and the... Solve Problem 1.4 using trigonometry. Problem 1.4 Along a railroad cut, a bed has an apparent dip of 20 in a direction of N62W. The bed strikes N67E. Using orthographic projection, find the true dip. Discuss each of the following topics in class or review the topics on your own. Then write a brief but complete essay in which you summarize the main points. Please include formulas and graphs as... Examine Figure 6-38, Time Shopping. (a) Notice that 52% of the people who go to a shopping center spend less than 1 hour. However, the figure also states that people spend an average of 69 minutes on... Discuss each of the following topics in class, or review the topics on your own. Then write a brief but complete essay in which you summarize the main points. Please include formulas and graphs as... Discuss each of the following topics in class or review the topics on your own. Then write a brief but complete essay in which you summarize the main points. Please include formulas and graphs as... Determine the products of each reaction. a. CH3 CH, C=CH, + H CH3 b. CH3 CH-CHCH-OH + HCl CH3 1 c. CH3 CH,CHCH, C-OH + H 1 d. CH3 -CH-N-CH-CH3 + HCI CH3 CHOH The graph shows the effect of temperature on enzyme activity. Explain why the graph has the general shape shown. For human enzymes, at what temperature would you expect the maximum in the curve to... Gold has a density of 19.3 g/mL. Suppose you have 100.0 glonkins of gold. What volume in liters will the gold occupy? Here are some conversion factors to help you: 0.911 ounce per glonkin and 28.35 g... Break into small groups and discuss the following topics. Organize a brief outline in which you summarize the main points of your group discussion. Iris setosa is a beautiful wildflower that is found... Examine Figure 6-37. Government documents and the Census Bureau show that the age at first marriage for U.S. citizens is approximately normally distributed for both men and women. For men, the... Express each of the following powers of 10 as an ordinary number: (a) 1 x 10 10 (b) 1 x 10 -5 . Powerball! Imagine, you could win a jackpot worth at least $10 million. Some jackpots have been worth more than $250 million! Powerball is a multistate lottery. To play Powerball, you purchase a $1... Discuss each of the following topics in class or review the topics on your own. Then write a brief but complete essay in which you summarize the main points. Please include formulas and graphs as... Discuss each of the following topics in class or review the topics on your own. Then write a brief but complete essay in which you summarize the main points. Please include formulas and graphs as... Match these three circulation components with their descriptions. capillary beds heart chambers heart contractions a. two atria, two ventricles b. driving force for blood c. zones of diffusion Discuss each of the following topics in class or review the topics on your own. Then write a brief but complete essay in which you summarize the main points. Please include formulas and graphs as... Sweets May Not Be Culprit in Hyper KidsThis is a USA Today headliner reporting results of a study that appeared in the New England Journal of Medicine. In this study, the subjects were 25 normal... Match the type of blood vessel with its major function. arteries arterioles capillaries veins a. diffusion b. control of blood distribution c. transport, blood volume reservoirs d. blood transport... The hollow center of an osteon (Haversian system) provides space for what vital part of compact bone tissue? a. Marrow b. Collagen fibers c. A blood vessel d. Osteocytes Discuss each of the following topics in class or review the topics on your own. Then write a brief but complete essay in which you summarize the main points. Please include formulas and graphs as... (a) A car tyre (i.e. an automobile tire) was inflated to a pressure of 24 lb in 2 (1.00 atm = 14.7 lb in 2 ) on a winters day when the temperature was 5C. What pressure will be found, assuming no... What is wrong with this procedure? According to Table 7-1, carbonate can be measured by a Volhard titration. Removal of the precipitate is required. To analyze an unknown solution of Na 2 CO 3 ,Na2CO... Examine the procedure in Table 7-1 for the Fajans titration of Zn2+.Zn 2+ . Do you expect the charge on the precipitate to be positive or negative after the equivalence point? Table 7-1 TABLE 7-1... Resolution with HPLC Teaching Assistant, an Excel spreadsheet that simulates high performance liquid chromatography separations. Download the Excel file from SaplingPlus, macmillanlearning.com, or... In Figure 22-14, the sucralose species with a nominal mass X=395 X=395 is [12C121H1816O835C13]-. [ 12 C 12 1 H 18 16 O 8 35 Cl 3 ]-. X+1X + 1 arises from isotopologues containing one 13C, 13 C, one... In theory, most metals should easily corrode in the air. Why? A group of metals called noble metals are relatively difficult to corrode in air. Some noble metals include gold, platinum, and silver.... Absorptions in the v=10 vibrationrotation spectrum of 1 H 35 Cl were observed at the following wavenumbers (in cm 1 ): Assign the rotational quantum numbers and use the method of combination... An empirical expression that reproduces the viscosity of water in the range 20100 C is where 20 is the viscosity at 20C. Explore (by using mathematical software) the possibility of fitting an...
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