Chemistry: An Atoms First Approach
2nd Edition
ISBN: 9781305079243
Author: Steven S. Zumdahl, Susan A. Zumdahl
Publisher: Cengage Learning
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Chapter 1, Problem 7RQ
Do the proton and the neutron have exactly the same mass? How do the masses of the proton and neutron compare to the mass of the electron? Which particles make the greatest contribution to the mass of an atom? which particles make the greatest contribution to the chemical properties of an mom?
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Chapter 1 Solutions
Chemistry: An Atoms First Approach
Ch. 1 - Define and e xplain the differences between the...Ch. 1 - Is the scientific method suitable for solving...Ch. 1 - Use Daltons atomic theory to account for each of...Ch. 1 - What evidence led to the conclusion that cathode...Ch. 1 - What discoveries were made by J. J. Thomson, Henri...Ch. 1 - Consider Ernest Rutherfords -particle bombardment...Ch. 1 - Do the proton and the neutron have exactly the...Ch. 1 - What is the distinction between atomic number and...Ch. 1 - Paracelsus, a sixteenth-century alchemist and...Ch. 1 - What is wrong with the following statement? The...
Ch. 1 - Which of the following is true about an individual...Ch. 1 - These questions concern the work of J. J. Thomson....Ch. 1 - Which of the following explain how an ion is...Ch. 1 - You have a chemical in a sealed glass container...Ch. 1 - You may have noticed that when water boils, you...Ch. 1 - One of the best indications of a useful theory is...Ch. 1 - Prob. 9ALQCh. 1 - Which (if any) of the following can be determined...Ch. 1 - The difference between a law and a theory is the...Ch. 1 - As part of a science project, you study traffic...Ch. 1 - Explain the fundamental steps of the scientific...Ch. 1 - When hydrogen is burned in oxygen to form water,...Ch. 1 - Explain the law of conservation of mass, the law...Ch. 1 - Chlorine has two natural isotopes: C1737I and...Ch. 1 - The vitamin niacin (nicotinic acid, C6H5NO2) can...Ch. 1 - Section 1-5 describes the postulates of Daltons...Ch. 1 - The contributions of J. J. Thomson and Ernest...Ch. 1 - What is the modern view of the structure of the...Ch. 1 - The number of protons in an atom determines the...Ch. 1 - If the volume of a proton is similar to the volume...Ch. 1 - Prob. 23QCh. 1 - What refinements had to be made in Daltons atomic...Ch. 1 - When mixtures of gaseous H2 and gaseous Cl2 react,...Ch. 1 - Observations of the reaction between nitrogen gas...Ch. 1 - A sample of chloroform is found to contain 12.0 g...Ch. 1 - A sample of H2SO4 contains 2.02 g of hydrogen,...Ch. 1 - Hydrazine, ammonia, and hydrogen azide al1 contain...Ch. 1 - Consider 100.0-g samples of two different...Ch. 1 - The three most stable oxides of carbon are carbon...Ch. 1 - Two elements, R and Q, combine to form two binary...Ch. 1 - Prob. 33ECh. 1 - In a combustion reaction, 46.0 g of ethanol reacts...Ch. 1 - Early tables of atomic weights (masses) were...Ch. 1 - Indium oxide contains 4.784 g of indium for every...Ch. 1 - Prob. 37ECh. 1 - If you wanted to make an accurate scale model of...Ch. 1 - In an experiment it was found that the total...Ch. 1 - A chemist in a galaxy far, far away performed the...Ch. 1 - Write the symbol of each atom using the ZAX...Ch. 1 - For carbon-14 and carbon-12, how many protons and...Ch. 1 - How many protons and neutrons are in the nucleus...Ch. 1 - What number of protons and neutrons is contained...Ch. 1 - Prob. 45ECh. 1 - Write the atomic symbol (ZAX) for each of the...Ch. 1 - For each of the following ions, indicate the...Ch. 1 - How many protons, neutrons, and electrons are in...Ch. 1 - Prob. 49ECh. 1 - What is the symbol of an ion with 16 protons, 18...Ch. 1 - Complete the following table:Ch. 1 - Complete the following table:Ch. 1 - Four Fe2+ ions are key components of hemoglobin,...Ch. 1 - Which of the following statements is/are true? For...Ch. 1 - Identify each of the following elements. Give the...Ch. 1 - The isotope of an unknown element, X, has a mass...Ch. 1 - Prob. 57AECh. 1 - The early alchemists used to do an experiment in...Ch. 1 - In a reaction, 34.0 g of chromium(III) oxide...Ch. 1 - Prob. 60CWPCh. 1 - Complete the following table. Atmos Number of...Ch. 1 - Complete the following table.Ch. 1 - Which of the following is( are) correct? a. C40a2+...Ch. 1 - Prob. 64CPCh. 1 - Each of the following statements is true, but...Ch. 1 - Reaction of 2.0 L of hydrogen gas with 1.0 L of...Ch. 1 - A combustion reaction involves the reaction of a...Ch. 1 - A chemistry instructor makes the following claim:...Ch. 1 - You have two distinct gaseous compounds made from...Ch. 1 - Using the information in Table 1-1, answer the...Ch. 1 - A single molecule has a mass of 7.31 1023 g....Ch. 1 - You have gone back in time and are working with...
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- The following table gives the number of protons and neutrons in the nuclei of various atoms. Which atom is the isotope of atom A? Which atom has the same mass number as atom A? Protons Neutrons Atom A 32 39 Atom B 33 38 Atom C 38 50 Atom D 32 38arrow_forwardHere are three fictitious elements and a molecular view of the atoms that compose them. The molar mass of the middle element, (b), is 25 grams per dozen (g/doz). (The atoms of these fictitious elements are much larger than ordinary atoms.) Based on the size of the atoms, do you expect the atomic masses of elements (a) and (c) to be greater than or less than (b)? How many atoms are present in 175 g of element (b)?arrow_forwardAn isotope of an element contains 63 protons and 91 neutrons. (a) Identify the element and give its symbol. (b) Give the elements atomic number. (c) Give the mass number of the isotope. (d) This element has two naturally occurring isotopes. Given the information in the table, calculate the atomic weight of the element. (e) In which region of the periodic table is the element found? Explain your answer. (f) Is the element a metal, metalloid, or nonmetal? Explain your answer. (g) This element, used in compact fluorescent light bulbs and computer screens, has an atomic radius of 180 pm. Calculate how long the chain of atoms would be if all the atoms in a 1.25-mg sample of this element were put into a row.arrow_forward
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- Define the term atomic weight. Why might the values of atomic weights on a planet elsewhere in the universe be different from those on earth?arrow_forward2.14 Consider the following nuclear symbols. How many protons, neutrons, and electrons does each element have? What elements do R, T, and X represent? (a) 1430R (b) 3989T (c) 55133Xarrow_forwardWhile traveling to a distant universe, you discover the hypothetical element X. You obtain a representative sample of the element and discover that it is made up of two isotopes, X-23 and X-25. To help your science team calculate the atomic weight of the substance, you send the following drawing of your sample with your report. In the report, you also inform the science team that the brown atoms are X-23, which have an isotopic mass of 23.02 amu, and the green atoms are X-25, which have an isotopic mass of 25.147 amu. What is the atomic weight of element X?arrow_forward
- You perform a chemical reaction using the hypothetical elements A and B. These elements are represented by their molecular models shown below: The product of the reaction represented by molecular models is a Using the molecular models and the boxes, present a balanced chemical equation for the reaction of elements A and B. b Using the symbols A and B2 for the chemical reaction, write a balanced chemical equation. c What are some real-element possibilities for element B?arrow_forward2.90 Naturally occurring europium has an average atomic weight of 151.964 amu. If the only isotopes of europium present are 151Eu and 153Eu, describe how you would determine the relative abundance of the two isotopes. Include in your description any information that would need to be looked up.arrow_forwardWhich of the following is{are) correct? a. 40Ca2 contains 20 protons and 18 electrons. b. Rutherford created the cathode-ray tube and was the founder of the charge-to-mass ratio of an electron. c. An electron is heavier than a proton. d. The nucleus contains protons, neutrons, and electrons.arrow_forward
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