Rate of decay of carbon 14 and its half life is given. The counts per minute per gram of carbon measured from a 15000 year old sample are to be determined. Effectiveness of radiocarbon dating for a small sample of 10mg or less is to be justified. Concept introduction: Radiocarbon dating is based on the radioactivity of the nuclide 6 14 C which decays by beta particle production. A living plant consumes carbon dioxide in the photosynthesis process and incorporates the carbon including 6 14 C into its molecule. To determine: The counts per minute per gram of carbon measured from a 15000 year old sample.

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3. 2. 1. On the graph below, plot the volume of rain in milliliters versus its height in centimeters for the 400 mL beaker. Draw a straight line through the points and label it "400 mL beaker." Volume (mL) 400 350 300 250 200 150 750 mL Florence Volume Versus Height of Water 400 mL beaker 100 50 0 0 2 3 4 5 Height (cm) 6 7 8 9 10 Explain why the data points for the beaker lie roughly on a straight line. What kind of relationship is this? How do you know? (see page 276 text) the design of the beaker is a uniform cylinder the volume of liquid increases evenly with its height resulting in a linear relationship. What volume would you predict for 10.0 cm of water? Explain how you arrived at your answer. Use the data table and the graph to assist you in answering the question. 4. Plot the volume of rain in milliliters versus its height in centimeters for the 250 mL Florence flask on the same graph. Draw a best-fit curve through the points and label it "250 mL Florence flask." oke came

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Chapter 18, Problem 37E

Interpretation Introduction

Interpretation: Rate of decay of carbon 14 and its half life is given. The counts per minute per gram of carbon measured from a 15000 year old sample are to be determined. Effectiveness of radiocarbon dating for a small sample of 10mg or less is to be justified.

Concept introduction: Radiocarbon dating is based on the radioactivity of the nuclide 614C which decays by beta particle production.

A living plant consumes carbon dioxide in the photosynthesis process and incorporates the carbon including 614C into its molecule.

To determine: The counts per minute per gram of carbon measured from a 15000 year old sample.

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3. 2. 1. On the graph below, plot the volume of rain in milliliters versus its height in centimeters for the 400 mL beaker. Draw a straight line through the points and label it "400 mL beaker." Volume (mL) 400 350 300 250 200 150 750 mL Florence Volume Versus Height of Water 400 mL beaker 100 50 0 0 2 3 4 5 Height (cm) 6 7 8 9 10 Explain why the data points for the beaker lie roughly on a straight line. What kind of relationship is this? How do you know? (see page 276 text) the design of the beaker is a uniform cylinder the volume of liquid increases evenly with its height resulting in a linear relationship. What volume would you predict for 10.0 cm of water? Explain how you arrived at your answer. Use the data table and the graph to assist you in answering the question. 4. Plot the volume of rain in milliliters versus its height in centimeters for the 250 mL Florence flask on the same graph. Draw a best-fit curve through the points and label it "250 mL Florence flask." oke came

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