EBK FOUNDATIONS OF COLLEGE CHEMISTRY
15th Edition
ISBN: 9781118930144
Author: Willard
Publisher: JOHN WILEY+SONS INC.
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Chapter 1, Problem 8AE
Interpretation Introduction
Interpretation:
Calculations have to be carried out for
Concept Introduction:
Significant figures: The digits that are measured in a number including one estimated digit are called as significant figures.
The answers for those calculations that involve addition and subtraction will have the same number of decimal places as the original number with the fewest decimal places.
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In a coffee press, you combine solid coffee grounds and hot water. After a long time,
the ground coffee beans are still visible, and the water has turned into a rich dark
brown (some of the coffee has dissolved into the liquid). You push the filter in the
press down and pour out only the dark water into a cup. You then add milk and
sugar to the cup. You also notice that the filter must have a hole in it because there
are coffee grounds also in your cup. Calculate the degree of freedom in this system
(your cup) at equilibrium.
1
2
3
4
19. The chemical equation for photosynthesis is
_CO2 (g) + _H₂O (1)→ __C6H1206 (s) +
(C6H12O6 is glucose, the simplest sugar)
a. Balance the chemical equation above by filling in the blanks.
b. According to onetreeplanted.org, the average tree (across all climates and sizes) removes 10 kg of
carbon dioxide from the atmosphere every year. Based on this, what mass of glucose is produced
annually by the average tree?
O2 (g)
c. Teak is a common species of tropical tree. The graph below shows the amount of CO₂ absorbed by teak
forests in tons of CO₂ per hectare of forest per year, according to the climate region where the forests
are found (dry = low rainfall, humid=high rainfall). Looking at your photosynthesis equation again, what
does this data suggest about which reactant is the limiting reactant for teak trees? Explain.
C Teak
Carbon sequestration rate (tons CO₂ ha -1yr -1)
10
10
20
Tropical
humid
Tropical
dry
Aboveground biomass,
0-20 years
Belowground biomass,
0 -20 years
Part IV
Cabbage Juice Indicator
Chop cabbage into small pieces until you have about 2 cups of chopped
cabbage. Boil for at least ten minutes to allow time for the color to leach out of
the cabbage. Allow it to cool for 15 min
• Filter out the plant material to obtain a red-purple-bluish colored liquid.
1. Add 1-2 drops of cabbage juice into a small bowl
2. Add 3-5 drops of vinegar into the bowl with the cabbage juice
3. Observe
Is this a chemical change or physical change? Explain?
Store the excess cabbage juice in your refrigerator, you will need them for future
experiments.
Chapter 1 Solutions
EBK FOUNDATIONS OF COLLEGE CHEMISTRY
Ch. 1.1 - Prob. 1.1PCh. 1.4 - Prob. 1.2PCh. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Prob. 5RQCh. 1 - Prob. 6RQCh. 1 - Prob. 7RQCh. 1 - Prob. 8RQ
Ch. 1 - Prob. 9RQCh. 1 - Prob. 10RQCh. 1 - Prob. 11RQCh. 1 - Prob. 12RQCh. 1 - Prob. 13RQCh. 1 - Prob. 14RQCh. 1 - Prob. 15RQCh. 1 - Prob. 16RQCh. 1 - Prob. 1PECh. 1 - Prob. 2PECh. 1 - Prob. 3PECh. 1 - Prob. 4PECh. 1 - Prob. 5PECh. 1 - Prob. 6PECh. 1 - Prob. 7AECh. 1 - Prob. 8AECh. 1 - Prob. 9AECh. 1 - Prob. 10AECh. 1 - Prob. 11AECh. 1 - Prob. 12AECh. 1 - Prob. 13AE
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