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1. A student moved East along vector V, and North of East along vector V2 as sho

1. A student moved East along vector V, and North of East along vector V2 as shown in the diagram. If the magnitude of V, is 7,x -5, and y 3, Determine (a) The magnitude of V2 Vi …

1. A student must prepare 500.0 mL of a solution containing 0.999 g of solid CuS

1. A student must prepare 500.0 mL of a solution containing 0.999 g of solid CuSO Which of the following statements are FALSE regarding the proper procedure to prepare this soluti…

1. A student needs to borrow $3500 for living expenses for a study-abroad progra

1. A student needs to borrow $3500 for living expenses for a study-abroad program in Hong Kong. She feels that she will be able to pay back only $3750 in 7 months after she works …

1. A student needs to prepare a solution that is 5:1 of acid to base. The acid c

1. A student needs to prepare a solution that is 5:1 of acid to base. The acid concentration is 0.20M, what should the molarity of the base be to guarantee the 5:1 ratio? 2. You n…

1. A student obtained a test tube with asuspension of white, slightly soluble ma

1. A student obtained a test tube with asuspension of white, slightly soluble magnesium hydroxide in water.This system was at equilibrium as represented by the followingequation: …

1. A student performed two m.p. determinations on a crystalline product whose re

1. A student performed two m.p. determinations on a crystalline product whose reported m.p. is 1430C. Data for the two determinations are as follows: Sample #     m.p. range, 0C  …

1. A student performs the following steps to isolate biphenyl from a solid 1:1 m

1. A student performs the following steps to isolate biphenyl from a solid 1:1 mixture of biphenyl and salicylic acid. a. Dissolve 2.0 grams of the mixture in 20 mL of ether b. Ex…

1. A student performs the following steps to isolate biphenyl from a solid 1:1 m

1. A student performs the following steps to isolate biphenyl from a solid 1:1 mixture of biphenyl and salicylic acid a. Dissolve 2.0 grams of the mixture in 20 mL of ether b. Ext…

1. A student prepared a base solution using 7 mL of 6M NaOH diluted with distill

1. A student prepared a base solution using 7 mL of 6M NaOH diluted with distilled water to a final volume of approximately 400 mL. The student titrated a standardized solution of…

1. A student prepared a base solution using 7 mL of 6M NaOH diluted with distill

1. A student prepared a base solution using 7 mL of 6M NaOH diluted with distilled water to a final volume of approximately 400 mL. The student titrated a standardized solution of…

1. A student prepares a 250.0 mL solution using 41.7 grams of potassium nitrite.

1. A student prepares a 250.0 mL solution using 41.7 grams of potassium nitrite. They then take 29.9 mL of this solution and dilute it to a final volume of 250.0 mL. How many gram…

1. A student pulls horizontally on a 12 kg box, which then moves horizontally wi

1. A student pulls horizontally on a 12 kg box, which then moves horizontally with an acceleration of 0.2 m/s2. If the student uses a force of 15 N, what is the coefficient of kin…

1. A student ran the following reaction in the laboratory at 590. K: CO(g) + Cl2

1. A student ran the following reaction in the laboratory at 590. K: CO(g) + Cl2(g) COCl2(g) When she introduced CO(g) and Cl2(g) into a 1.00 L evacuated container, so that the in…

1. A student reacts 1.60 ml of 15.7M HNO3 with 0.5000g of copper metal. Determin

1. A student reacts 1.60 ml of 15.7M HNO3 with 0.5000g of copper metal.  Determine the limiting reactant and the amount of excess reactant (in moles) left over, assuming the react…

1. A student reported the mass of 10 glass beads as 2.507 +- 0.015g. What should

1. A student reported the mass of 10 glass beads as 2.507 +- 0.015g. What should the student report as the mass of one bead? Explain your answer 2. A student reported the density …

1. A student reported the mass of ten glass beads as 2.507 ± 0.015 g. What sho 4

1. A student reported the mass of ten glass beads as 2.507 ± 0.015 g. What sho 4. A student noticed that the average diameter of as the mass of one bead? Explain your answer. uid …

1. A student said that the probability of selecting a king from a standard deck

1. A student said that the probability of selecting a king from a standard deck of cards is 4/52 and the probability of selecting a heart is 13/52, so the probability of selecting…

1. A student scored 625 on exam A and 45 on exam B. The national average for the

1. A student scored 625 on exam A and 45 on exam B. The national average for these exams are 475 and 30, with standard deviations 100 and 8, respectively. On which exam did the st…

1. A student should wash their hands for 10 seconds when practicing aseptic tech

1. A student should wash their hands for 10 seconds when practicing aseptic technique. True/False 2. When transferring culture to agar plates, it is OK to have the plate uncovered…

1. A student standrdized a NaOH soln. using 15.00mL of 0.250 M HCl as a primary

1. A student standrdized a NaOH soln. using 15.00mL of 0.250 M HCl as a primary standard. Titration required 42.73 mL of NaOH. Cal the molarity of NaOH soln. 2. A NaOH soln of unk…

1. A student stands at the edge of a cliff and throws a stone horizontally over

1. A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of v0 = 15.5 m/s. The cliff is h = 40.0 m above a flat, horizontal beach. (a)…

1. A student started with 20 grams of a fat (with a formula weight of 696 grams/

1. A student started with 20 grams of a fat (with a formula weight of 696 grams/mole). The student follows the procedure given in this experiment except that the student used 3.25…

1. A student studies the kinetics of reaction 1 below using a clock reaction tec

1. A student studies the kinetics of reaction 1 below using a clock reaction technique, reaction 2, and the procedures given in this experiment. For reaction mixture 1, he measure…

1. A student studies the kinetics of reaction 1 below using a clock reaction tec

1. A student studies the kinetics of reaction 1 below using a clock reaction technique, reaction 2, and the procedures given in this experiment. For reaction mixture 1, he measure…

1. A student takes an exam with 25 multiple choice questions. Each question has

1. A student takes an exam with 25 multiple choice questions. Each question has 4 possible answers, one of which is correct. The student gets 3 points for each correct answer and …

1. A student was in a hurry to carry out this determination and took some shortc

1. A student was in a hurry to carry out this determination and took some shortcuts in doing the experiment. Briefly explain whether each of the following changes would lead to hi…

1. A student was tasked to repeat this experiment three times byexactly the same

1. A student was tasked to repeat this experiment three times byexactly the same procedure in order to estimate the experimental uncertainty in the determinationof optical rotatio…

1. A student weighs 30.0 mL of an unknown liquid and finds its mass to be 20.86

1. A student weighs 30.0 mL of an unknown liquid and finds its mass to be 20.86 g. Calculate the density of the unknown liquid. (Remember to always include units and report the an…

1. A student who is performing this experiment pours an 8.50 mL sample of the sa

1.      A student who is performing this experiment pours an 8.50 mL sample of the saturated borax solution into a 10 mL graduated cylinder after the borax solution had cooled to …

1. A student who was in a hurry to complete this experiment did not follow the e

1. A student who was in a hurry to complete this experiment did not follow the exact directions for some of the procedural steps. Briefly explain what effect, if any, the followin…

1. A student who was performing a distillation for the firsttime failed to posit

1. A student who was performing a distillation for the firsttime failed to position the thermometer correctly. The bulb was settoo high. What effect would this have on the observe…

1. A student wishes to recrystallize a sample of 4-bromobenzoic acid. How much b

1. A student wishes to recrystallize a sample of 4-bromobenzoic acid. How much boiling water would it take to dissolve 5.0 g? 2. After adding the 5 g of 4-bromobenzoic acid to wat…

1. A student working on a summer internship in the economic rescarch department

1. A student working on a summer internship in the economic rescarch department of a large corporation studied the relation between sales of a product (Y, in millions of dollars) …

1. A student’s NASDAQ portfolio from a previous class contained the following in

1. A student’s NASDAQ portfolio from a previous class contained the following investment characteristics. What is the expected return on this portfolio? 2. A pension fund manager …

1. A study by a survey group shows that 58.7% of households have a pet dog. a. F

1. A study by a survey group shows that 58.7% of households have a pet dog. a. For a randomly selected group of 75 households, find the mean and standard deviation for the number …

1. A study by one automobile manufacturer indicated that 1 out of every 4 new ca

1. A study by one automobile manufacturer indicated that 1 out of every 4 new cars required repairs under the company's new-car warranty, with an average cost of repair of $50.00 …

1. A study concluded that there was a correlation between refined sugar consumpt

1. A study concluded that there was a correlation between refined sugar consumption (Calories per person per day) and annual rate of major depression (cases per 100 people) The fo…

1. A study conducted at Manatee Community College revealed that students who att

1. A study conducted at Manatee Community College revealed that students who attended class 90 100% of the time usually received an A in the class. Students who attend class 80-90…

1. A study examining if administering a medication A and participating in regula

1. A study examining if administering a medication A and participating in regular aerobic exercise is associated with improvements in patient anxiety post myocardial infarction. I…

1. A study followed 900,000 US adults from 1992 to 2008. At baseline, all partic

1. A study followed 900,000 US adults from 1992 to 2008. At baseline, all participants were screened and determined to be cancer free and their body mass index (BMI) was calculate…

1. A study found that parenting classes were closely related to a child\'s perfo

1. A study found that parenting classes were closely related to a child's performance in school. Each week of parenting classes taken by a child's parents raised their high school…

1. A study found that parenting classes were closely related to a child\'s perfo

1. A study found that parenting classes were closely related to a child's performance in school. Each week of parenting classes taken by a child's parents raised their high school…

1. A study is conducted to assess the relationship between cholesterol levels an

1. A study is conducted to assess the relationship between cholesterol levels and coronary heart disease. 1329 adult aged subject's hospital records are randomly sampled. The chol…

1. A study is conducted to determine if there is a relationship between stomach

1. A study is conducted to determine if there is a relationship between stomach cancer and alcohol consumption. Everyone treated at a hospital for stomach cancer was asked about t…

1. A study is conducted to estimate survival in patients following kidney transp

1. A study is conducted to estimate survival in patients following kidney transplant. Key factors that adversely affect success of the transplant include advanced age and diabetes…

1. A study is made of the effect of curing temperature on the compressive streng

1. A study is made of the effect of curing temperature on the compressive strength of a certain type of concrete. Five concrete specimens are cured at each of four temperatures, a…

1. A study of business executives reported that 63 percent had witnessed ethical

1. A study of business executives reported that 63 percent had witnessed ethically troubling behavior. About 21 percent of those who reported unethical behavior were penalized. Th…

1. A study of commuting times reports the travel times to work of a random sampl

1. A study of commuting times reports the travel times to work of a random sample of 30 employed adults in the Bay Area. The sample mean is 31.25 minutes and the standard deviatio…

1. A study of long-distance phone calls made from General Electric\'s corporate

1. A study of long-distance phone calls made from General Electric's corporate headquarters in Fairfield, Connecticut, revealed the length of the calls, in minutes, follows the no…

1. A study of long-distance phone calls made from General Electric\'s corporate

1. A study of long-distance phone calls made from General Electric's corporate headquarters in Fairfield, Connecticut, revealed the length of the calls, in minutes, follows the no…