accuracy of an experiment determined? What is density and how will it be used in the Measurements Experiment? 2. You are asked by the King of Allegesia to determine if the crown he was given for his birthday is pure gold. The density of pure gold is 19.32 g/mL; the density of water is 0.998 g/mL at 20°C. There is a container when filled to mark contains 1900.0 mL. When the container is filled with water to the mark, it has a mass of 2499.5 g. The crown is placed in the container and filled to mark with water and now weighs 15,113.3 g. The crown has a mass of 13,910.0 g. What is the density of the crown? Is the crown pure gold? 3. Linus Pauling (recipient of 2 Nobel Prizes, one for Chemistry and another for Peace) wrote a book, '"Vitamin C and the Common Cold", which proposed that large doses of vitamin C can cure the common cold. One commercial over-the-counter production consists of 500.0 mg tablets that are 20.0 % by mass Vitamin C. How many of these tablets are need for a 1.00 g dose of vitamin C? Each 500.0 mg tablet costs 2 cents. If you can take a 1000.0 mg table of pure vitamin C for 9 cents a tablet, which would be more cost effective?

accuracy of an experiment determined? What is density and how will it be used in the Measurements Experiment? 2. You are asked by the King of Allegesia to determine if the crown he was given for his birthday is pure gold. The density of pure gold is 19.32 g/mL; the density of water is 0.998 g/mL at 20°C. There is a container when filled to mark contains 1900.0 mL. When the container is filled with water to the mark, it has a mass of 2499.5 g. The crown is placed in the container and filled to mark with water and now weighs 15,113.3 g. The crown has a mass of 13,910.0 g. What is the density of the crown? Is the crown pure gold? 3. Linus Pauling (recipient of 2 Nobel Prizes, one for Chemistry and another for Peace) wrote a book, '"Vitamin C and the Common Cold", which proposed that large doses of vitamin C can cure the common cold. One commercial over-the-counter production consists of 500.0 mg tablets that are 20.0 % by mass Vitamin C. How many of these tablets are need for a 1.00 g dose of vitamin C? Each 500.0 mg tablet costs 2 cents. If you can take a 1000.0 mg table of pure vitamin C for 9 cents a tablet, which would be more cost effective?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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2. Aluminum has a density of 2.70 g/cm. What would be the mass of a sample whose volume is 10.0 cm?? 3. A certain piece of copper wire is determined to have a mass of 2.00 g per meter. How many centimeters of the wire would be needed to provide 0.28 g of copper. 4. You are examining a chunk of an unknown metal, and are trying to identify it using its density. However, the sample is jagged and rough; you are unable to measure its volume using a ruler. Fortunately, you do have water available. What technique can you use to determine the sample's density? What tools do you need?
2) Calculate the areas of the rectangle and circle in cm2. Report the answers to the correct number of significant figures. a. Area of rectangle b. Area of circle
Decide whether each proposed addition or subtraction of measurements is possible. If it is possible, write the result in the last column of the table. Be sure every answer you enter has the correct unit symbol. proposed addition or subtraction 26.00 dL + 36.00 dL = ? 14.000 m + 41.000 cm = ? 32.000 mL + 22.000 mm = ? Is this possible? O O 00 yes no yes no yes no result 0 П 0 0 ☐x10 X S
Please complete B. 1-10 and C. 1-10 Thank you very much
Multiply or divide the following measurements. Be sure each answer you enter contains the correct number of significant digits. 7.8084mol/L * 1.52
4. In Figure 4 below, a graph shows the relationship between mass and volume for two substances, A and B. Use the graph to answer questions about these two substances. FIGURE 4: Mass and VOume Reationships a) Which substance is more dense, substance A or substance B? Explain your reasoning. ४० Substande A Z 60 b) Find the slope of the line for both A and B using correct units. State the physical meaning of the slope ("For every...") for each substance. slope A 50- 40 For cvery... %3D 20 Substance B Slope B Y2-Y. X2-X volumel(mL) For every... c) Water has a density of 1.00 g/mL. Draw the line representing water on the graph in Figure 4. d) Determine whether substance A and B will sink or float when placed in a bucket of water. Substance A: sink float Substance B: sink float (circle correct response) Mass (g)
Please help with question 1
Use the References to access important values if needed for this question. A general chemistry student found a chunk of metal in the basement of a friend's house. To figure out what it was, she used the ideas just developed in class about density. She measured the mass of the metal to be 323.0 grams. Then she dropped the metal into a measuring cup and found that it displaced 16.5 mL of water. Calculate the density of the metal. Density= g/mL Densities of Some Common Substances Substance Density (g/mL) Water Aluminum 2.72 Chromium 7.25 Nickel Copper Silver Lead Mercury 1.00 Gold Tungsten Platinum 8.91 8.94 10.50 11.34 13.60 19.28 19.38 21.46 Previous Next> ?
10) Solve each problem and report your answer to correct significant figure and units. Remember that units multiply, divide, add, subtract and simplify just like variables. ml 65.0 kg + 0.05 kg + 179.1 kg = 17 g x 1.08 175 cm - 22.5 cm = 9.20 g/ (1.72 cm³ + 21 cm³) = ot avlo2a 3.23 x 10=23 ma (23.0 lb/gal)(2 ft) = (2.1 x 10-10 cm)3 to 1edmun sdi enimale0 (2.23 x 103 g)(9.0 × 10-3 g) (3.1 x 104 nm²)1/2 = Jmy to. 10.1 x 10-7 s2
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A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of carbon tetrachloride, diethylamine, tetrahydrofuran, dimethyl sulfoxide, and chloroform. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density g 1.6 alo carbon tetrachloride 3 cm Ar diethylamine 0.71 3 cm tetrahydrofuran 0.89 3 cm