56 CHAPTER 2 Chemistry and Measurements 2.88 A shipping box has a length of 7.00 in., a width of 6.00 in., and a height of 4.00 in. (2.3, 2.6) a. What is the length of the box, in centimeters? b. What is the width of the box, in centimeters? c. How many significant figures are in the width measurement? d. Calculate the volume of the box, in cubic centimeters, to the correct number of significant figures (Volume = Length × Width × Height) 2.89 Each of the following diagrams represents a container of water

Mr. Naresh works in a multinational company. He is stressed due to his hectic schedule. Mr. Amit, his friend, comes to know that he has started taking sleeping pills without consulting the doctor. Mr. Amit requests ‘ Naresh to stop this practice and takes him to a Yoga centre. With regular Yoga sessions, Mr. Naresh is now a happy and relaxed man. ‘ After reading the above passage, answer the following questions: (i) Write the values shown by Mr. Amit. (ii) Which class of drugs is used in sleeping pills? (iii) Why is it not advisable to take sleeping pills without consultation with the doctor?

In a survey of 1000 large corporations, 250 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job (USA Today).(a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p.(b) Find a 0.95 confidence interval for p.(c) As a news writer, how would you report the survey results regarding the proportion of corporations that hire the equally qualified nonsmoker? What is the margin of error based on a 95% confidence interval?

After Maria’s 8th cup of coffee one night during finals week, she remembered that high doses of caffeine can kill you. Maria was worried that she was more susceptible because she weighed only 47.7 kg. Maria did some research and found that 150 mg/kg of caffeine was lethal and the coffee she was drinking is 0.04% m/v caffeine. How many cups of coffee could Maria drink before she would likely die?

Calculate the Ka of X in chloroform. Answèr in 4 significant figures.

Gyuri performed an analysis of Simvastatin tablets. The following are the data she obtained: 39.5 mg, 41.2 mg, 40.7 mg, 38.9 mg, 42.1 mg, 41.7 mg, 38.7 mg Suppose the mg of Simvastatin stated in label is 40 mg, is there a significant difference between her results and the label claim?

10 Not sure if calculated correctly

Mass of beaker and milk= 65.922 g Mass of beaker= 45.347 g  Mass of milk (g)?   pH of milk= 8 Isoelectric point= 5 Mass of watch glass and casein= 28.438 g Mass of watch glass= 27.832 g Mass of casein (g)? Percent casein in milk?

Solid calcium carbonate, CaCO3, was added to a solution of pure water. Analysis found 1.20*10-3 M Ca2+ ions in solution. Calculate the Ksp of CaCO3. Be sure to use 3 significant digits in your answer.

What is the mass % of isopentyl acetate given the following information.Rx = 0.569Area of Isopentyl acetate peak = 197Area of Isopentyl alcohol peak = 145