Chemistry In Context
9th Edition
ISBN: 9781259638145
Author: Fahlman, Bradley D., Purvis-roberts, Kathleen, Kirk, John S., Bentley, Anne K., Daubenmire, Patrick L., ELLIS, Jamie P., Mury, Michael T., American Chemical Society
Publisher: Mcgraw-hill Education,
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Chapter 2.12, Problem 2.17YT
Interpretation Introduction
Interpretation:
The given equations are balanced should be demonstrated by counting the number of each element on both sides of the arrow.
Concept Introduction:
Chemical equation is the representation of a chemical reaction, in which the reactants and products of the reactions are represented left and right side of an arrow respectively by using their respective chemical formulas.
Balanced chemical equation of a reaction is written according to law of conservation of mass.
Combustion is the process of burning of a compound; in which the compound reacts with excess of oxygen.
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Pick an element from the Periodic Table AFTER number 25, Mn, and do not pick a diatomic element. Pick something different and fun! Now answer the following questions on a piece of paper which you will upload as a pdf file, and show all your work with units for calculations for any credit. Use your CHM 130 Periodic Table for molar masses and use 6.02 x 1023 for Avogadro's number or you may be counted wrong!!!
1. What is the symbol for your element? (Must be after Mn in Periodic Table)
2. What is the molar mass of your element? (include units)
3. How many atoms are in a mole of your element? (No calculation needed)
4. If you had 14.5 grams of your element, how many moles is that?
5. If you had 14.5 grams of your element, how many atoms is that?
6. Theoretically speaking, if your element was in the gas state at STP, how many grams is 2.25 liters of your element? (Most elements are not gases at STP so this question is just theoretical) You may not use the Ideal Gas Law to solve this.
Imagine that you have discovered several stable isotopes of a new element, which you call element X. The measured isotope masses and abundances are given in the table below.
Percent Abundance
Mass (amu)
353.1165
354.1330
356.3666
Isotope
353X
354X
356X
10.909%
41.304%
47.787%
What is the average atomic mass of this new element X? Provide at least 5 significant figures (2 decimal places) in your answer.
Show all of your work and calculations in the answer box below. You will not get full credit for this question if you do not show your work.
For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
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Y
A O
A 30.141 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put into a combustion analysis
apparatus, yielding 53.694 mg of carbon dioxide and 21.980 mg of water. In another experiment, 43.663 mg of the compound is
reacted with excess oxygen to produce 18.87 mg of sulfur dioxide.
Add subscripts to the formula provided to correctly identify the empirical formula of this compound. Do not change the order of
the elements.
empirical formula:
CHSO
Chapter 2 Solutions
Chemistry In Context
Ch. 2.1 - Prob. 2.2YTCh. 2.2 - Prob. 2.3YTCh. 2.2 - The air is different in a pine forest, a bakery,...Ch. 2.3 - Scientific Practices More Oxygen ? We live in an...Ch. 2.4 - Prob. 2.6YTCh. 2.4 - Prob. 2.7YTCh. 2.7 - Prob. 2.8YTCh. 2.7 - Skill Building Mother Eats Peanut Butter Many...Ch. 2.8 - Prob. 2.10YTCh. 2.9 - Prob. 2.11YT
Ch. 2.9 - Sulfur dioxide (SO2) is released in the air when...Ch. 2.9 - Prob. 2.13YTCh. 2.10 - Prob. 2.14YTCh. 2.10 - Prob. 2.15YTCh. 2.11 - Prob. 2.16YTCh. 2.12 - Prob. 2.17YTCh. 2.12 - Prob. 2.18YTCh. 2.13 - Prob. 2.19YTCh. 2.13 - Prob. 2.20YTCh. 2.13 - Prob. 2.21YTCh. 2.13 - Prob. 2.22YTCh. 2.14 - Prob. 2.24YTCh. 2.14 - Summarize what you have learned about ozone...Ch. 2.15 - Prob. 2.27YTCh. 2.15 - Prob. 2.28YTCh. 2 - Scientific Practices Footprints in the Air Hiking...Ch. 2 - Prob. 1QCh. 2 - Prob. 2QCh. 2 - Identify three sources of particulate matter found...Ch. 2 - Prob. 4QCh. 2 - Gases found in the atmosphere in small amounts...Ch. 2 - Hydrocarbons are important fuels that we burn...Ch. 2 - Prob. 7QCh. 2 - If you had a sample of 500 particles of air, how...Ch. 2 - Count the atoms on both sides of the equation to...Ch. 2 - Prob. 10QCh. 2 - Prob. 11QCh. 2 - These questions relate to the combustion of...Ch. 2 - Balance the following equations in which ethane...Ch. 2 - Prob. 14QCh. 2 - Prob. 15QCh. 2 - Prob. 16QCh. 2 - Prob. 17QCh. 2 - Name the following nitrogen-containing compounds:...Ch. 2 - Prob. 19QCh. 2 - A carbon monoxide detector will go off if the...Ch. 2 - Prob. 21QCh. 2 - Nail polish remover containing acetone was spilled...Ch. 2 - Prob. 23QCh. 2 - Prob. 24QCh. 2 - Prob. 25QCh. 2 - Prob. 26QCh. 2 - A headline from the Anchorage Daily News in Alaska...Ch. 2 - Consider how life on Earth would change if the...Ch. 2 - Prob. 29QCh. 2 - Undiluted cigarette smoke may contain 23% CO. a....Ch. 2 - Prob. 31QCh. 2 - Prob. 32QCh. 2 - Prob. 33QCh. 2 - Here are air quality data for the last week of...Ch. 2 - Prob. 35QCh. 2 - Prob. 36QCh. 2 - Prob. 37QCh. 2 - Prob. 38QCh. 2 - Prob. 39QCh. 2 - Consumers now can purchase paints that emit only...Ch. 2 - Prob. 41QCh. 2 - Prob. 42QCh. 2 - Prob. 43QCh. 2 - Mercury, another serious air pollutant, is not...Ch. 2 - The EPA oversees the Presidential Green Chemistry...Ch. 2 - Here are two scanning electron micrograph images...Ch. 2 - Prob. 47QCh. 2 - Prob. 48QCh. 2 - You may have admired the beauty of hardwood...Ch. 2 - Prob. 50Q
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