Chemistry
12th Edition
ISBN: 9780078021510
Author: Raymond Chang Dr., Kenneth Goldsby Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 2, Problem 2.122IME
One technique proposed for recycling plastic grocery bags is to heat them at 700°C and high pressure to form carbon microspheres that can be used in a number of applications. Electron microscopy shows some representative carbon microspheres obtained in this manner, where the scale is given in the bottom right corner of the figure. Determine the number of carbon atoms in a typical carbon microsphere.
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3. Consider the compounds below and determine if they are aromatic, antiaromatic, or
non-aromatic. In case of aromatic or anti-aromatic, please indicate number of I
electrons in the respective systems. (Hint: 1. Not all lone pair electrons were explicitly
drawn and you should be able to tell that the bonding electrons and lone pair electrons
should reside in which hybridized atomic orbital 2. You should consider ring strain-
flexibility and steric repulsion that facilitates adoption of aromaticity or avoidance of anti-
aromaticity)
H H
N
N:
NH2
N
Aromaticity
(Circle)
Aromatic Aromatic Aromatic Aromatic Aromatic
Antiaromatic Antiaromatic Antiaromatic Antiaromatic Antiaromatic
nonaromatic nonaromatic nonaromatic nonaromatic nonaromatic
aromatic TT
electrons
Me
H
Me
Aromaticity
(Circle)
Aromatic Aromatic Aromatic
Aromatic Aromatic
Antiaromatic Antiaromatic Antiaromatic Antiaromatic Antiaromatic
nonaromatic nonaromatic nonaromatic nonaromatic nonaromatic
aromatic πT
electrons
H
HH…
A chemistry graduate student is studying the rate of this reaction:
2 HI (g) →H2(g) +12(g)
She fills a reaction vessel with HI and measures its concentration as the reaction proceeds:
time
(minutes)
[IH]
0
0.800M
1.0
0.301 M
2.0
0.185 M
3.0
0.134M
4.0
0.105 M
Use this data to answer the following questions.
Write the rate law for this reaction.
rate
= 0
Calculate the value of the rate constant k.
k =
Round your answer to 2 significant digits. Also be
sure your answer has the correct unit symbol.
Chapter 2 Solutions
Chemistry
Ch. 2.1 - The atoms of elements A (blue) and B (orange) form...Ch. 2.3 - How many protons, neutrons, and electrons are in...Ch. 2.3 - Review of Concepts
What is the atomic number of an...Ch. 2.4 - In viewing the periodic table, do chemical...Ch. 2.5 - Review of Concepts
what does S8 signify? How does...Ch. 2.6 - Write the empirical formula for caffeine...Ch. 2.6 - Prob. 4PECh. 2.6 - Prob. 1RCCh. 2.7 - Name the following compounds: (a) PbO and (b)...Ch. 2.7 - Prob. 6PE
Ch. 2.7 - Name the following molecular compounds: (a) NF3...Ch. 2.7 - Prob. 8PECh. 2.7 - Prob. 1RCCh. 2.7 - Prob. 9PECh. 2.7 - Prob. 2RCCh. 2.8 - Prob. 1RCCh. 2 - Prob. 2.1QPCh. 2 - Name the types of radiation known to be emitted by...Ch. 2 - Compare the properties of the following: ...Ch. 2 - What is meant by the term fundamental particle?Ch. 2 - Describe the contributions of the following...Ch. 2 - Describe the experimental basis for believing that...Ch. 2 - The diameter of a helium atom is about 1 102 pm....Ch. 2 - Prob. 2.8QPCh. 2 - Use the helium-4 isotope to define atomic number...Ch. 2 - Why do all atoms of an element have the same...Ch. 2 - What do we call atoms of the same elements with...Ch. 2 - Explain the meaning of each term in the symbol...Ch. 2 - What is the mass number of an iron atom that has...Ch. 2 - Calculate the number of neutrons in 239Pu.Ch. 2 - Prob. 2.15QPCh. 2 - Indicate the number of protons, neutrons, and...Ch. 2 - Write the appropriate symbol for each of the...Ch. 2 - Write the appropriate symbol for each of the...Ch. 2 - What is the periodic table, and what is its...Ch. 2 - State two differences between a metal and a...Ch. 2 - Write the names and symbols for four elements in...Ch. 2 - Define, with two examples, the following terms:...Ch. 2 - Prob. 2.23QPCh. 2 - Describe the changes in properties (from metals to...Ch. 2 - Consult a handbook of chemical and physical data...Ch. 2 - Group the following elements in pairs that you...Ch. 2 - Prob. 2.27QPCh. 2 - Prob. 2.28QPCh. 2 - Describe the two commonly used molecular models.Ch. 2 - Prob. 2.30QPCh. 2 - Prob. 2.31QPCh. 2 - Prob. 2.32QPCh. 2 - Identify the following as elements or compounds:...Ch. 2 - Prob. 2.34QPCh. 2 - Give the number of protons and electrons in each...Ch. 2 - Give the number of protons and electrons in each...Ch. 2 - What does a chemical formula represent? What is...Ch. 2 - Define molecular formula and empirical formula....Ch. 2 - Give an example of a case in which two molecules...Ch. 2 - Prob. 2.40QPCh. 2 - Prob. 2.41QPCh. 2 - Prob. 2.42QPCh. 2 - Prob. 2.43QPCh. 2 - Prob. 2.44QPCh. 2 - What are the empirical formulas of the following...Ch. 2 - What are the empirical formulas of the following...Ch. 2 - Write the molecular formula of glycine, an amino...Ch. 2 - Write the molecular formula of ethanol. The color...Ch. 2 - Prob. 2.49QPCh. 2 - Prob. 2.50QPCh. 2 - Prob. 2.51QPCh. 2 - Prob. 2.52QPCh. 2 - Prob. 2.53QPCh. 2 - Prob. 2.54QPCh. 2 - Prob. 2.55QPCh. 2 - Prob. 2.56QPCh. 2 - Name these compounds: (a) Na2CrO4, (b) K2HPO4, (c)...Ch. 2 - Prob. 2.58QPCh. 2 - Prob. 2.59QPCh. 2 - Prob. 2.60QPCh. 2 - Sulfur (S) and fluorine (F) form several different...Ch. 2 - Prob. 2.62QPCh. 2 - Pair the following species that contain the same...Ch. 2 - Write the correct symbols for the atoms that...Ch. 2 - Prob. 2.65QPCh. 2 - In which one of the following pairs do the two...Ch. 2 - Prob. 2.67QPCh. 2 - Prob. 2.68QPCh. 2 - Determine the molecular and empirical formulas of...Ch. 2 - What is wrong with or ambiguous about the phrase...Ch. 2 - Prob. 2.71QPCh. 2 - Which of the following are elements, which are...Ch. 2 - Prob. 2.73QPCh. 2 - Prob. 2.74QPCh. 2 - Each of the following pairs of elements will react...Ch. 2 - Match the descriptions [(a)(h)] with each of the...Ch. 2 - Explain why anions are always larger than the...Ch. 2 - Prob. 2.78QPCh. 2 - Caffeine, shown here, is a psychoactive stimulant...Ch. 2 - Prob. 2.80QPCh. 2 - Prob. 2.81QPCh. 2 - Prob. 2.82QPCh. 2 - Fill in the blanks in the following table.Ch. 2 - Prob. 2.84QPCh. 2 - Write the formula of the common ion derived from...Ch. 2 - Prob. 2.86QPCh. 2 - Prob. 2.87QPCh. 2 - Of the 118 elements known, only two are liquids at...Ch. 2 - Prob. 2.89QPCh. 2 - Prob. 2.90QPCh. 2 - Prob. 2.91QPCh. 2 - Prob. 2.92QPCh. 2 - Prob. 2.93QPCh. 2 - Prob. 2.94QPCh. 2 - List five elements each that are (a) named after...Ch. 2 - Prob. 2.96QPCh. 2 - Fluorine reacts with hydrogen (H) and deuterium...Ch. 2 - Prob. 2.98QPCh. 2 - Identify each of the following elements: (a) a...Ch. 2 - Prob. 2.100QPCh. 2 - Show the locations of (a) alkali metals, (b)...Ch. 2 - Fill the blanks in the following table.Ch. 2 - Prob. 2.103QPCh. 2 - In Section 2.1 it was pointed out that mass and...Ch. 2 - Draw all possible structural formulas of the...Ch. 2 - Prob. 2.106QPCh. 2 - Draw two different structural formulas based on...Ch. 2 - Prob. 2.108QPCh. 2 - Prob. 2.109QPCh. 2 - A monatomic ion has a charge of +2. The nucleus of...Ch. 2 - In the following 2 2 crossword, each letter must...Ch. 2 - Prob. 2.112QPCh. 2 - Prob. 2.113QPCh. 2 - Prob. 2.114QPCh. 2 - Prob. 2.115QPCh. 2 - Prob. 2.116IMECh. 2 - Prob. 2.117IMECh. 2 - Prob. 2.118IMECh. 2 - Prob. 2.119IMECh. 2 - Prob. 2.120IMECh. 2 - Prob. 2.121IMECh. 2 - One technique proposed for recycling plastic...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- 1. For the four structures provided, Please answer the following questions in the table below. a. Please draw π molecular orbital diagram (use the polygon-and-circle method if appropriate) and fill electrons in each molecular orbital b. Please indicate the number of π electrons c. Please indicate if each molecule provided is anti-aromatic, aromatic, or non- aromatic TT MO diagram Number of π e- Aromaticity Evaluation (X choose one) Non-aromatic Aromatic Anti-aromatic || ||| + IVarrow_forward1.3 grams of pottasium iodide is placed in 100 mL of o.11 mol/L lead nitrate solution. At room temperature, lead iodide has a Ksp of 4.4x10^-9. How many moles of precipitate will form?arrow_forwardQ3: Circle the molecules that are optically active: ДДДДarrow_forward
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