Chemistry: Structure and Properties (2nd Edition)

2nd Edition

ISBN: 9780134293936

Author: Nivaldo J. Tro

Publisher: PEARSON

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.

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Textbook Question

Chapter 1, Problem 84E

How many moles of aluminum do 3.7 × 10 24 aluminum atoms represent?

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Chapter 1, Problem 83E

Chapter 1, Problem 85E

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Chapter 1 Solutions

Chemistry: Structure and Properties (2nd Edition)

Ch. 1 - Explain this statement in your own words and give...Ch. 1 - Explain the main goal of chemistry.Ch. 1 - What are two different ways to classify matter?Ch. 1 - How do solids, liquids, and gases differ?Ch. 1 - Explain the difference between a pure substance...Ch. 1 - Explain the difference between an element and a...Ch. 1 - Explain the difference between a homogeneous and a...Ch. 1 - Describe the scientific approach to knowledge. How...Ch. 1 - Prob. 9E Ch. 1 - What observations did Antoine Lavoisier make? What...

Ch. 1 - What theory did John Dalton formulate?Ch. 1 - What is wrong with the expression, “That is just a...Ch. 1 - Summarize the history of the atomic idea. How was...Ch. 1 - Prob. 14E Ch. 1 - State and explain the law of definite proportions.Ch. 1 - State and explain the law of multiple proportions....Ch. 1 - What are the main ideas in Dalton’s atomic theory?...Ch. 1 - How and by whom was the electron discovered? What...Ch. 1 - Explain Millikan’s oil drop experiment and how it...Ch. 1 - Prob. 20E Ch. 1 - Describe Rutherford’s gold foil experiment. How...Ch. 1 - Describe Rutherford’s nuclear model of the atom....Ch. 1 - If matter is mostly empty space, as suggested by...Ch. 1 - List the three subatomic particles that compose...Ch. 1 - What defines an element?Ch. 1 - Explain the difference between Z (the atomic...Ch. 1 - Where do elements get their names?Ch. 1 - What are isotopes? What is percent natural...Ch. 1 - Describe the two different notations used to...Ch. 1 - Prob. 30E Ch. 1 - Prob. 31E Ch. 1 - Explain how a mass spectrometer works. What kind...Ch. 1 - What is a mole? How is the mole concept useful in...Ch. 1 - Prob. 34E Ch. 1 - Each shape represents a type of particle (such as...Ch. 1 - Using triangles to represent one type of atom and...Ch. 1 - Classify each substance as a pure substance or a...Ch. 1 - Classify each substance as a pure substance or a...Ch. 1 - Prob. 39E Ch. 1 - Complete the table. Substance Pure or mixture Type...Ch. 1 - Determine whether each molecular diagram...Ch. 1 - Determine whether each molecular diagram...Ch. 1 - Classify each statement as an observation, a law,...Ch. 1 - Classify each statement as an observation, a law,...Ch. 1 - A chemist decomposes several samples of carbon...Ch. 1 - When astronomers observe distant galaxies, they...Ch. 1 - Prob. 47E Ch. 1 - An automobile gasoline tank holds 21 kg of...Ch. 1 - Two samples of carbon tetrachloride are decomposed...Ch. 1 - Two samples of sodium chloride are decomposed into...Ch. 1 - The mass ratio of sodium to fluorine in sodium...Ch. 1 - Upon decomposition, one sample of magnesium...Ch. 1 - Two different compounds containing osmium and...Ch. 1 - Palladium forms three different compounds with...Ch. 1 - Prob. 55E Ch. 1 - Sulfur and fluorine form several different...Ch. 1 - Which statements are consistent with Dalton’s...Ch. 1 - Which statements are inconsistent with Dalton’s...Ch. 1 - Which statements are consistent with Rutherford’s...Ch. 1 - Which statements are inconsistent with...Ch. 1 - A chemist in an imaginary universe, where...Ch. 1 - Imagine a unit of charge called the zorg. A...Ch. 1 - Which statements about subatomic particles are...Ch. 1 - Which statements about subatomic particles are...Ch. 1 - Write isotopic symbols in the form XA (e g., C-13)...Ch. 1 - Write isotopic symbols in the form ZAX for each...Ch. 1 - Determine the number of protons and the number of...Ch. 1 - Determine the number of protons and the number of...Ch. 1 - The amount of carbon-14 in ancient artifacts and...Ch. 1 - Uranium-235 is used in nuclear fission. Determine...Ch. 1 - Determine the number of protons and the number of...Ch. 1 - Determine the number of protons and the number of...Ch. 1 - Gallium has two naturally occurring isotopes with...Ch. 1 - Magnesium has three naturally occurring isotopes...Ch. 1 - The atomic mass of fluorine is 18.998 amu, and its...Ch. 1 - The atomic mass of copper is 63.546 amu. Do any...Ch. 1 - An element has two naturally occurring isotopes....Ch. 1 - An element has four naturally occuring isotopes...Ch. 1 - Bromine has two naturally occurring isotopes...Ch. 1 - Silicon has three naturally occurring isotopes...Ch. 1 - Use the mass spectrum of europium shown here to...Ch. 1 - Use the mass spectrum of rubidium shown here to...Ch. 1 - How many sulfur atoms are there in 5.52 mol of...Ch. 1 - How many moles of aluminum do 3.71024 aluminum...Ch. 1 - What is the amount, in moles, of each elemental...Ch. 1 - What is the mass, in grams, of each elemental...Ch. 1 - How many silver atoms are there in 3.78 g of...Ch. 1 - What is the mass of 4.91 x 1021 platinum atoms?Ch. 1 - Calculate the number of atoms in each sample. 5.18...Ch. 1 - Calculate the number of atoms in each sample...Ch. 1 - Calculate the mass in grams, of each sample. 1.1 x...Ch. 1 - Calculate the mass, in kg, of each sample. 7.55 x...Ch. 1 - How many carbon atoms are there in a diamond (pure...Ch. 1 - How many helium atoms are there in a helium blimp...Ch. 1 - Calculate the average mass, in grams, of one...Ch. 1 - Using scanning tunneling microscopy, scientists at...Ch. 1 - A 7.83-g sample of HCN contains 0.290 g of H and...Ch. 1 - The ratio of sulfur to oxygen by mass in SO2 is...Ch. 1 - Use the mass spectrum of lead shown here to...Ch. 1 - Use the mass spectrum of mercury shown here to...Ch. 1 - Nuclei with the same number of neutrons but...Ch. 1 - Fill in the blanks to complete the table. Symbol z...Ch. 1 - A penny has a thickness of approximately 1.0 mm....Ch. 1 - Consider the stack of pennies in Problem 103. How...Ch. 1 - A pure copper sphere has a radius of 0.935 in. How...Ch. 1 - A pure titanium cube has an edge length of 2.78...Ch. 1 - A 67.2-g sample of a gold and palladium alloy...Ch. 1 - Common brass is a copper and zinc alloy containing...Ch. 1 - The U.S. Environmental Protection Agency (EPA)...Ch. 1 - Pure gold is usually too soft for jewelry, so it...Ch. 1 - Silver is composed of two naturally occurring...Ch. 1 - To the right is a representation of 50 atoms of a...Ch. 1 - The ratio of oxygen to nitrogen by mass in NO2 is...Ch. 1 - Naturally occurring cobalt consists of only one...Ch. 1 - A 7.36-g sample of copper is contaminated with an...Ch. 1 - The ratio of the mass of O to the mass of N in...Ch. 1 - Naturally occurring magnesium has an atomic mass...Ch. 1 - In Section 1.10 O, it was stated that 1 mol of...Ch. 1 - Use the concepts in this chapter to obtain an...Ch. 1 - A volatile liquid (one that readily evaporates) is...Ch. 1 - The diagram to the right represents solid carbon...Ch. 1 - Use triangles to represent atoms of element A and...Ch. 1 - Identify each statement as being most like an...Ch. 1 - The mole is defined as the amount of a substance...Ch. 1 - Prob. 125E Ch. 1 - Using white and black circles to represent...Ch. 1 - In a naturally occurring sample, 19.8% of boron...Ch. 1 - In complete sentences, describe the similarities...Ch. 1 - Calculate the mass in grams of one mole of each of...Ch. 1 - The U.S. Environmental Protection Agency (U.S....Ch. 1 - This image represents a particulate view of a...Ch. 1 - A chemist mixes sodium with water and witnesses a...Ch. 1 - Two samples of a compound containing elements A...Ch. 1 - A compound containing only carbon and hydrogen has...Ch. 1 - Which concept was demostrated by Rutherford’s gold...Ch. 1 - A student re-creates Millikan’s oil drop...Ch. 1 - Prob. 7SAQ Ch. 1 - An isotope of an element contains 82 protons and...Ch. 1 - How many electrons are in the Cr3+ ion? 24...Ch. 1 - A naturally occurring sample of an element...Ch. 1 - Copper has an atomic mass of 63.55 amu and two...Ch. 1 - Which sample contains the greatest number of...Ch. 1 - A solid copper cube contains 4.31023 atoms. What...Ch. 1 - Determine the number of atoms in 1.85 mL of...Ch. 1 - A 20.0-g sample of an element contains 4.951023...

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How many moles of aluminum do 3.7 × 10 24 aluminum atoms represent?

Solution Summary: The author explains how the number of moles of aluminium is calculated using Avogadro's number.

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Chapter 1 Solutions