Introduction To Chemistry
5th Edition
ISBN: 9781259911149
Author: BAUER, Richard C., Birk, James P., Marks, Pamela
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 2, Problem 103QP
Identify the groups of the periodic table in which all the elements form ions of the charge indicated.
(a) 1+ cations
(b) 2+ cations
(c)
(d)
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(a) The following synthesis of the molecule shown in the circle has a major problem. What is this problem? (2
pts)
1) HBr
(no peroxides)
2) H-
NaNH2
Br
3) NaNH,
4) CH3Br
5) H2, Pd
(b) Starting with the molecule shown below and any other materials with two carbons or less, write out an
alternate synthesis of the circled molecule. More than one step is needed. Indicate the reagent(s) and the major
product in all the steps in your synthesis. (5 pts)
2024 Fall Term (1) Organic Chemistry 1 (Lec)
CHEM 22204 02[6386] (Hunter College)
(c) Using the same starting material as in part (b) and any other materials win two carpons or less, write out
syntheses of the circled molecules shown below. More than one step is needed in each case. Indicate the
reagent(s) and the major product in all the steps in your synthesis. You may use reactions and products from
your synthesis in part (b). (5 pts)
alt
ons for
Free Response Questions
FRQ 1:
0/5
To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and
some inert materials, solutions with known [Co?) are prepared and absorbance of each of the
solutions is measured at the wavelength of optimum absorbance. The data are used to create a
calibration plot, shown below.
0.90-
0.80-
0.70
0.60
0.50
0.40-
0.30
0.20-
0.10-
0.00-
0.005
0.010
Concentration (M)
0.015
A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted
with water to a final volume of 50.00 ml. Assume that all the cobalt in the ore sample is converted to
Co2+(aq).
a. What is the [Co2] in the solution if the absorbance of a sample of the solution is 0.74?
13
✗
b. Calculate the number of moles of Co2+(aq) in the 50.00 mL solution.
0.008 mols Co
Please correct answer and don't used hand raiting
Chapter 2 Solutions
Introduction To Chemistry
Ch. 2 - What evidence suggests that matter is composed of...Ch. 2 - How can the composition of atom differ?Ch. 2 - How do ions differ from the atoms of elements?Ch. 2 - How can we describe the mass of the atoms of the...Ch. 2 - How does the periodic table relate to the...Ch. 2 - For the atom represented in the following diagram,...Ch. 2 - A rare isotope of carbon has a mass number of 14....Ch. 2 - Write two representations for the following...Ch. 2 - Determine the number of neutrons in each of the...Ch. 2 - How many protons and electrons compose the...
Ch. 2 - Write the isotope symbols for ions that have the...Ch. 2 - The copper mined from Earth’s crust consists of...Ch. 2 - The element lithium is composed of two isotopes,...Ch. 2 - Identify the element that is described. (a) the...Ch. 2 - Prob. 10PPCh. 2 - Match the key terms with the descriptions...Ch. 2 - Match the key terms with the descriptions...Ch. 2 - Prob. 3QPCh. 2 - What modern technique allows us to “see� the...Ch. 2 - How does Dalton‘s atomic theory describe atoms...Ch. 2 - How does Dalton’s atomic the theory the law of...Ch. 2 - How does Dalton‘s atomic theory explain the law...Ch. 2 - How does Dalton's atomic theory explain the...Ch. 2 - Does the following diagram represent a chemical...Ch. 2 - Does the following diagram represent a chemical...Ch. 2 - Which experiment showed that all atoms contain...Ch. 2 - What information about the structure of the atom...Ch. 2 - Which subatomic particles are negatively charged?Ch. 2 - Which subatomic particles are positively charged?Ch. 2 - Helium is used in balloons and blimps because of...Ch. 2 - Hydrogcn-3 (tritium) is used as a tracer in...Ch. 2 - Which subatomic particle has approximately the...Ch. 2 - Which of the following best describes about how...Ch. 2 - Explain why the mass of a carbon atom is about...Ch. 2 - Which subatomic particle was discovered last? Why...Ch. 2 - Prob. 21QPCh. 2 - How many protons are in each atom of each of the...Ch. 2 - The number of which subatomic particle determines...Ch. 2 - How do isotopes of an element differ?Ch. 2 - What information do you need to determine the...Ch. 2 - What information do you need to determine the mass...Ch. 2 - Which of the following are always the same for...Ch. 2 - Which of the following are different for isotopes...Ch. 2 - Given the composition of the nuclei, what are the...Ch. 2 - Identify the element from the atom shown. What are...Ch. 2 - What are the atomic number, neutron number, and...Ch. 2 - Identify the element from the atom shown. What are...Ch. 2 - Prob. 33QPCh. 2 - How many protons, neutrons, and electrons are in...Ch. 2 - What is the isotope symbol for atoms that contain...Ch. 2 - What is the isotope symbol for atoms that contain...Ch. 2 - How many protons and neutrons are in an atom...Ch. 2 - How many protons and neutrons are in an atom...Ch. 2 - A study of blood flow in heart muscle uses...Ch. 2 - Phosphorus-32 can be used to treat eye tumors. 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(a) What is...Ch. 2 - The mass spectrum of magnesium is shown. (a) What...Ch. 2 - What is the mass in amu of 1000 boron atoms?Ch. 2 - What is the mass in amu of 1000 mercury atoms?Ch. 2 - Which contains more atoms, 2500 amu of boron atoms...Ch. 2 - A sample of pure silver and a simple of pure gold...Ch. 2 - Identify which of the elements Br, K, Mg, Al, Mn,...Ch. 2 - Identify which of the elements He, Zn, Pb, L Ca,...Ch. 2 - Prob. 87QPCh. 2 - Name the element that is an alkaline earth metal...Ch. 2 - What element is in group IVB (4) and in period 4?Ch. 2 - What element is in group IVA (14) and in period 2?Ch. 2 - Identify each of the following elements as a...Ch. 2 - Identify each of the following elements as a...Ch. 2 - Identify the following elements as a main-group...Ch. 2 - Identify the following elements as a main-group...Ch. 2 - Prob. 95QPCh. 2 - Prob. 96QPCh. 2 - Prob. 97QPCh. 2 - Prob. 98QPCh. 2 - Prob. 99QPCh. 2 - The noble gases are sometimes called “inert...Ch. 2 - The ions of many of the main-group elements have...Ch. 2 - Prob. 102QPCh. 2 - Identify the groups of the periodic table in which...Ch. 2 - For each group listed. identify the charge on the...Ch. 2 - Prob. 105QPCh. 2 - Prob. 106QPCh. 2 - Prob. 107QPCh. 2 - Chlorine gas reacts with potassium to form a...Ch. 2 - When iron rusts. a compound forms with the formula...Ch. 2 - Is the law of conservation of mass obeyed in the...Ch. 2 - A 100-g sample of zinc sul�de contains 67.1 g...Ch. 2 - A 100-g sample of HgO contains 92.6 g mercury and...Ch. 2 - What properties of electrons contributed to why...Ch. 2 - What experimental evidence led to each of the...Ch. 2 - Which isotope has a mass number of 60 and an...Ch. 2 - Why is it impossible for an element to have a mass...Ch. 2 - How many protons and neutrons are in a...Ch. 2 - What number of each type of subatomic particle is...Ch. 2 - Explain why the relative atomic mass of cobalt is...Ch. 2 - Which element has an isotope that has a mass...Ch. 2 - Some tables list relative atomic mass to as many...Ch. 2 - How many atoms are in each of the following...Ch. 2 - Naturally occurring iodine is composed of only one...Ch. 2 - Prob. 124QPCh. 2 - A sample of pure carbon and a sample of pure...Ch. 2 - Two equal-volume balloons contain the same number...Ch. 2 - Naturally occurring boron comprises two isotopes,...Ch. 2 - Prob. 128QPCh. 2 - Prob. 129QPCh. 2 - Nitrogen and oxygen are the main components of the...Ch. 2 - Prob. 131QPCh. 2 - Which element is the only nonmetal in group IVA...Ch. 2 - Prob. 133QPCh. 2 - Prob. 134QPCh. 2 - Complete the following table for the designated...Ch. 2 - Atoms of the element shown in this photo contain...Ch. 2 - Positron emission tomography (PET) is used in...Ch. 2 - When silver tarnishes, a chemical reaction occurs...Ch. 2 - The iron found in the human body is in the form of...Ch. 2 - Which has the greater density, an ice cube...Ch. 2 - Prob. 141QPCh. 2 - After he conducted cathode ray tube experiments...Ch. 2 - Analysis of carbon-14 content is used to date...Ch. 2 - A naturally occurring isotope of potassium has a...Ch. 2 - Prob. 145QPCh. 2 - A monatomic ion with a 4+ charge has the same...Ch. 2 - Which of the following has the greatest number of...Ch. 2 - Prob. 148QPCh. 2 - Atoms that are isotopes of the same element differ...Ch. 2 - Which of the following statements about atoms and...Ch. 2 - Elements in which group always form monatomic ions...Ch. 2 - Identify the number of protons and neutrons in an...Ch. 2 - Naturally occurring gallium (Ga) is made of two...Ch. 2 - Which of the following elements is classi�ed as...
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