Chemistry In Focus7th EditionTro Publisher: CengageISBN: 9781337670425
Chemistry In Focus
Solutions for Chemistry In Focus
Problem 4.1YT:
Interpreting Chemical Formulas Determine the number of each type of atom in the following chemical...Problem 4.5YT:
Calculating Formula Mass Calculate the formula mass of dinitrogen monoxide (N2O), an anaesthetic gas...Problem 4.6YT:
Using the Molar Mass to Find the Number of Molecules in a Sample of a Compound Calculate the number...Problem 4.8YT:
Chemical Formulas as Conversion Factors (Mass to Mass) How many grams of Oarein2.5gramsofCO2?Problem 4.11YT:
Using Chemical Equation Coefficients as Conversion Factors (Mass to Mass) One of the reactions...Problem 5SC:
The coefficients in the chemical reaction 2A+3B products give us a relationship between which of the...Problem 1E:
In Chapter 3, we learned that all matter is composed of atoms. In this chapter, we learned that most...Problem 2E:
Name some common everyday compounds.Problem 15E:
Why must chemical equations be balanced?Problem 17E:
Chemical Formulas Determine the number of each type of atom in each chemical formula:...Problem 18E:
Determine the number of each type of atom in each chemical formula: a.Na2Ob.CF2Cl2c.K2CO3d.Mg(HCO3)2Problem 27E:
Give a chemical formula for each compound: a. nitrogen dioxide b. calcium chloride c. carbon...Problem 28E:
Give a chemical formula for each compound: a. sulfur trioxide b. phosphorus pentachloride c. carbon...Problem 30E:
Calculate the formula mass for each compound:...Problem 31E:
The formula mass of an unknown compound containing only C and H is 44 amu. What is its molecular...Problem 32E:
The formula mass of an unknown compound containing only C and H is 70.1 amu. What is its molecular...Problem 33E:
Mole Conversions How many moles of CO2 are contained in a 10.5-g sample of dry ice (pure solid CO2)?Problem 34E:
What is the mass of 2.55 moles of water?Problem 35E:
The active ingredient in aspirin is acetylsalicylic acid, which has the chemical formula C9H8O4. An...Problem 36E:
The active ingredient in Tylenol is acetaminophen (C8H9NO2). A single regular-strength Tylenol...Problem 38E:
Acetone (C3H6O) is used as nail polish remover. If the amount of acetone used to remove the polish...Problem 40E:
One drop of water from a medicine dropper has a volume of approximately 0.050mL(1mL=1cm3). a....Problem 45E:
The U.S. Food and Drug Administration recommends that you consume less than 2.4 g of sodium per day....Problem 46E:
The scientific consensus indicates that adults should consume about 2.0 mg of fluoride per day for...Problem 53E:
Water can be synthesized according to the following unbalanced chemical equation: H2+O2H2O a....Problem 54E:
Billions of pounds of urea, CO(NH2)2, are produced annually for use as a fertilizer. The principal...Browse All Chapters of This Textbook
Chapter 1 - Molecular ReasonsChapter 2 - The Chemist’s ToolboxChapter 3 - Atoms And ElementsChapter 4 - Molecules, Compounds, And Chemical ReactionsChapter 5 - Chemical BondingChapter 6 - Organic ChemistryChapter 7 - Light And ColorChapter 8 - Nuclear ChemistryChapter 9 - Energy For TodayChapter 10 - Energy For Tomorrow: Solar And Other Renewable Energy Sources
Chapter 11 - The Air Around UsChapter 12 - The Liquids And Solids Around Us: Especially WaterChapter 13 - Acids And Bases: The Molecules Responsible For Sour And BitterChapter 14 - Oxidation And ReductionChapter 15 - The Chemistry Of Household ProductsChapter 16 - Biochemistry And BiotechnologyChapter 17 - Drugs And Medicine: Healing, Helping, And HurtingChapter A - Significant Figures
Book Details
The Seventh Edition of CHEMISTRY IN FOCUS helps students develop an appreciation for the molecular world that underlies the world we can see. From the first page to the last, Professor Tro emphasizes the connection between the atoms and molecules that com
Sample Solutions for this Textbook
We offer sample solutions for Chemistry In Focus homework problems. See examples below:
Chapter 1, Problem 1SCChapter 2, Problem 1SCChapter 2, Problem 28EChapter 2, Problem 29EChapter 2, Problem 30Ea) Square meters (m2) in 1 square kilometer (km2). To convert km2 to m2, first write the correct...a) Square centimeters (cm2) in 1 square meter (m2). To convert m2 to cm2, first write the correct...Chapter 2, Problem 46EChapter 3, Problem 3.1YT
Chapter 3, Problem 48EChapter 3, Problem 49EChapter 3, Problem 50EChapter 3, Problem 56EChapter 4, Problem 4.1YTChapter 4, Problem 42Ea) PbO+NH3→Pb+N2+H2O H atom is balanced by multiplying the coefficient 2 with NH3 and the...a) C2H6+O2→CO2+H2O H atom is balanced by multiplying the coefficient 6 with H2O and the coefficient...Chapter 4, Problem 53EChapter 4, Problem 54Ea) 2.3 mol CH4 The equivalence is obtained between moles of CH4 and moles CO2 with the help of the...Chapter 4, Problem 63EChapter 5, Problem 5.1YTChapter 5, Problem 29EChapter 6, Problem 6.1YTGiven information: The frequency of the radio signal is 840KHz. First, the relationship between...Chapter 7, Problem 25EGiven information: The violet edge of spectrum appears at a wavelength of 400 nm. The red edge of...An alpha particle consists of two protons and two neutrons. During alpha decay, reactant reacts and...Chapter 9, Problem 9.1YTChapter 9, Problem 35Ea) Pine wood The combustion of pinewood produces heat energy. The energy produced during combustion...a) The number of kilocalories produce in 1 s. The energy produced in one second by the power plant...a) Number of moles of CO2 are produced by the combustion of 4×1012 Kg of C8H18. The amount of CO2...a) The increase in the energy consumption between 1949 and 2012 and the average yearly increase...a) The total increase in emission of CO2 and also the percentage increase for the period between...Since the total power produced is 29.7 kW, the output power is as follows: The conversion of kW into...Given information: The initial volume of gasoline is 2.0 L, the pressure at sea level is 1.0 atm and...The boiling point of a molecule depends upon the intermolecular forces and the thermal energy....Chapter 13, Problem 1SCChapter 13, Problem 5EChapter 13, Problem 7EAcids are the substances that dissociate into hydronium ions in their aqueous solution. For example:...Chapter 14, Problem 14.1YTThe chemical equation for the respiration reaction is as follows: C6H12O6 + 6O2→6CO2+6H2O An...An oxidizing agent is a substance that tends to gain electrons in a redox reaction. It oxidizes the...The automobile battery is a lead-acid storage battery. The lead-acid storage battery is the type of...Chapter 14, Problem 31EChapter 14, Problem 38EPolymers are long chain organic compounds that are generated by many monomer units. Many monomers...Reason for the correct option: Fats are triglycerides which have three long hydrocarbon chains. This...Reason for correct option: Acetaminophen is one of the substitutes for aspirin. It reduces fever and...Chapter A, Problem A1.1YT
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Chemistry in Focus
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