Introductory Chemistry (5th Edition) (Standalone Book)
5th Edition
ISBN: 9780321910295
Author: Nivaldo J. Tro
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 91E
Write the symbol for each isotope in the form
a. cobalt-60
b. neon-22
c. iodine-131
d. plutonium-244
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Learning Goal:
This question reviews the format for writing an element's written symbol. Recall that written symbols have a particular format. Written symbols use a form like this:
35 Cl
17
In this form the mass number, 35, is a stacked superscript. The atomic number, 17, is a stacked subscript. "CI" is the chemical symbol for the element chlorine. A general way to show this form is:
It is also correct to write symbols by leaving off the atomic number, as in the following form:
atomic number
mass number Symbol
35 Cl or
mass number Symbol
This is because if you write the element symbol, such as Cl, you know the atomic number is 17 from that symbol. Remember that the atomic number, or number of protons in the nucleus, is what defines the element. Thus, if 17 protons
are in the nucleus, the element can only be chlorine. Sometimes you will only see 35 C1, where the atomic number is not written.
Watch this video to review the format for written symbols.
In the following table each column…
need help please and thanks dont understand only need help with C-F
Learning Goal:
As discussed during the lecture, the enzyme HIV-1 reverse transcriptae (HIV-RT) plays a significant role for the HIV virus and is an important drug target. Assume a concentration [E] of 2.00 µM (i.e. 2.00 x 10-6 mol/l) for HIV-RT. Two potential drug molecules, D1 and D2, were identified, which form stable complexes with the HIV-RT.
The dissociation constant of the complex ED1 formed by HIV-RT and the drug D1 is 1.00 nM (i.e. 1.00 x 10-9). The dissociation constant of the complex ED2 formed by HIV-RT and the drug D2 is 100 nM (i.e. 1.00 x 10-7).
Part A - Difference in binding free eenergies
Compute the difference in binding free energy (at a physiological temperature T=310 K) for the complexes. Provide the difference as a positive numerical expression with three significant figures in kJ/mol.
The margin of error is 2%.
Part B - Compare difference in free energy to the thermal…
need help please and thanks dont understand only need help with C-F
Learning Goal:
As discussed during the lecture, the enzyme HIV-1 reverse transcriptae (HIV-RT) plays a significant role for the HIV virus and is an important drug target. Assume a concentration [E] of 2.00 µM (i.e. 2.00 x 10-6 mol/l) for HIV-RT. Two potential drug molecules, D1 and D2, were identified, which form stable complexes with the HIV-RT.
The dissociation constant of the complex ED1 formed by HIV-RT and the drug D1 is 1.00 nM (i.e. 1.00 x 10-9). The dissociation constant of the complex ED2 formed by HIV-RT and the drug D2 is 100 nM (i.e. 1.00 x 10-7).
Part A - Difference in binding free eenergies
Compute the difference in binding free energy (at a physiological temperature T=310 K) for the complexes. Provide the difference as a positive numerical expression with three significant figures in kJ/mol.
The margin of error is 2%.
Part B - Compare difference in free energy to the thermal…
Chapter 4 Solutions
Introductory Chemistry (5th Edition) (Standalone Book)
Ch. 4 - Q1. Which statement is not part of Dalton’s...Ch. 4 - Q2. Which statement best summarizes the nuclear...Ch. 4 - Q3. An ion composed of which of these particles...Ch. 4 - Which element is a maingroup metal with an even...Ch. 4 - Which element is a halo0gen? a. Ne b. O c. Ca d. ICh. 4 - Prob. 6SAQCh. 4 - Q7. Which element is a row 4 noble gas?
a. Ne
b....Ch. 4 - How many element does the predictable (most...Ch. 4 - Q9. How many neutrons does the Fe-56 isotope...Ch. 4 - Q10. Determine the number of protons, neutrons,...
Ch. 4 - Q11. What is the charge of the Cr ion that...Ch. 4 - An element has four naturally occurring isotopes;...Ch. 4 - What did Democritus contribute to our modern...Ch. 4 - 2. What are three man ideas in Dalton’s atomic...Ch. 4 - Describe Rutherfords gold foil experiment and the...Ch. 4 - What are the main ideas in the nuclear theory of...Ch. 4 - List the three subatomic particles and their...Ch. 4 - What is electrical charge?Ch. 4 - Is matter usually charge-neutral? How would be...Ch. 4 - 8. What does the atomic number of an element...Ch. 4 - What is a chemical symbol?Ch. 4 - Prob. 10ECh. 4 - What Dmitri Mendeleevs main contribution to our...Ch. 4 - What is the man idea in the periodic law?Ch. 4 - How is the periodic table organized?Ch. 4 - Prob. 14ECh. 4 - Prob. 15ECh. 4 - Prob. 16ECh. 4 - Prob. 17ECh. 4 - Locate each group of elements on the periodic...Ch. 4 - 19. What is an ion?
Ch. 4 - Prob. 20ECh. 4 - 21. Locate each group on the periodic table and...Ch. 4 - 22. What are isotopes?
Ch. 4 - Prob. 23ECh. 4 - Prob. 24ECh. 4 - What notations are commonly used to specify...Ch. 4 - What is the atomic mass of an element?Ch. 4 - 27. Which statement are inconsistent with Dalton’s...Ch. 4 - Which statements are consistent with Daltons...Ch. 4 - Which statements are inconsistent with Rutherfords...Ch. 4 - 30. Which statement are consistent with...Ch. 4 - Prob. 31ECh. 4 - 32. Some of the alpha particles used in...Ch. 4 - 33. Which statement about electrons is true?
a....Ch. 4 - Which statements about neutrons are...Ch. 4 - 35. Which statement about protons is true?
a....Ch. 4 - Prob. 36ECh. 4 - 37. How many electrons would it take to equal the...Ch. 4 - A helium nucleus has two has two neutrons. How...Ch. 4 - Prob. 39ECh. 4 - 40. What mass of protons is required to neutralize...Ch. 4 - Prob. 41ECh. 4 - Prob. 42ECh. 4 - Prob. 43ECh. 4 - How many protons are in the nucleus of an atom of...Ch. 4 - 45. List the symbol and atomic number of each...Ch. 4 - 46. List the symbol and atomic number of each...Ch. 4 - List the name and the atomic number of each...Ch. 4 - List the name and the atomic number of each...Ch. 4 - Fill in the blanks to complete the table. Element...Ch. 4 - Fill in the blanks to complete the table. Element...Ch. 4 - Classify each element as a metal, nonmetal, or...Ch. 4 - Classify each element as a metal, nonmetal, or...Ch. 4 - Which elements would you expect to lose electrons...Ch. 4 - 54. Which elements would you expect to gain...Ch. 4 - 55. Which elements are main group elements?
a....Ch. 4 - Which elements are not main-group elements? a. AI...Ch. 4 - 57. Which elements are alkaline earth metals?
a....Ch. 4 - Which elements are alkaline earth metal? a....Ch. 4 - 59. Which elements are alkali metals?
a. barium
b....Ch. 4 - Which elements are alkali metals? a. scandium b....Ch. 4 - Classify each element as a halogen, a noble gas,...Ch. 4 - Prob. 62ECh. 4 - 63. To what group number does each element...Ch. 4 - Prob. 64ECh. 4 - Which element do you expect to be most like...Ch. 4 - Which element do you expect to be most like...Ch. 4 - Which pair of elements do you expect to be most...Ch. 4 - Prob. 68ECh. 4 - 69. Which element is a main – group nonmetal?
a....Ch. 4 - Prob. 70ECh. 4 - Prob. 71ECh. 4 - Prob. 72ECh. 4 - Prob. 73ECh. 4 - Prob. 74ECh. 4 - Prob. 75ECh. 4 - Prob. 76ECh. 4 - Prob. 77ECh. 4 - 78. Determine the number of protons and electrons...Ch. 4 - Prob. 79ECh. 4 - Determine whether each statement is true or false....Ch. 4 - Predict the ion formed by each element. a. Rb b. K...Ch. 4 - 82. Predict ion formed by each element.
a. F
b....Ch. 4 - Predict how many electrons each element will most...Ch. 4 - Predict how many electrons each element will most...Ch. 4 - 85. Fill in the blanks to compele the...Ch. 4 - Fill in the blacks to complete the table. Symbol...Ch. 4 - Prob. 87ECh. 4 - 88. How many neutrons are in an atom each atomic...Ch. 4 - 89. Write isotopic symbols in the form for each...Ch. 4 - Write isotopic symbol in the form X-A (for...Ch. 4 - Write the symbol for each isotope in the form XZA....Ch. 4 - Write the symbol for each isotope in the form XZA....Ch. 4 - 93. Determine the number of protons and neutrons...Ch. 4 - Prob. 94ECh. 4 - Carbon 14, present within living organisms and...Ch. 4 - Plutonium-239 is used in nuclear bombs. Determine...Ch. 4 - Rubidium has two naturally occurring isotopes:...Ch. 4 - 98. Silicon has three naturally occurring...Ch. 4 - Bromine has two naturally occurring isotopes...Ch. 4 - Silver has two naturally occurring isotopes...Ch. 4 - 101. An element has two naturally occurring...Ch. 4 - Copper has two naturally occurring isotopes. Cu-63...Ch. 4 - Electrical charge is sometimes reported in...Ch. 4 - 104. How many excess protons are in a charged...Ch. 4 - 105. The hydrogen atom contains 1 proton 1...Ch. 4 - 106. Carbon-12 contains 6 protons and 6 neutrons....Ch. 4 - Prob. 107ECh. 4 - 108. Determine the number of protons and neutrons...Ch. 4 - Fill in the blanks to complete the table. Symbol Z...Ch. 4 - 110. Fill in the blanks to complete the...Ch. 4 - Prob. 112ECh. 4 - Chapter 1 describes the difference between...Ch. 4 - 114. Chapter1 describes the difference between...Ch. 4 - The atomic mass of fluorine is 19. 00 amu, and all...Ch. 4 - 116. The atomic mass of germanium is 72.61 amu. Is...Ch. 4 - Prob. 117ECh. 4 - Gallium has only two naturally occurring isotopes,...Ch. 4 - 119. The figure shown here is a representation of...Ch. 4 - 120. Neutron stars are believed to be composed of...Ch. 4 - 121. Complete the following...Ch. 4 - Prob. 122ECh. 4 - Prob. 123ECh. 4 - Prob. 124E
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- Please correct answer and don't used hand raitingarrow_forwardneed help please and thanks dont understand a-b Learning Goal: As discussed during the lecture, the enzyme HIV-1 reverse transcriptae (HIV-RT) plays a significant role for the HIV virus and is an important drug target. Assume a concentration [E] of 2.00 µM (i.e. 2.00 x 10-6 mol/l) for HIV-RT. Two potential drug molecules, D1 and D2, were identified, which form stable complexes with the HIV-RT. The dissociation constant of the complex ED1 formed by HIV-RT and the drug D1 is 1.00 nM (i.e. 1.00 x 10-9). The dissociation constant of the complex ED2 formed by HIV-RT and the drug D2 is 100 nM (i.e. 1.00 x 10-7). Part A - Difference in binding free eenergies Compute the difference in binding free energy (at a physiological temperature T=310 K) for the complexes. Provide the difference as a positive numerical expression with three significant figures in kJ/mol. The margin of error is 2%. Part B - Compare difference in free energy to the thermal energy Divide the…arrow_forwardPlease correct answer and don't used hand raitingarrow_forward
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