Introductory Chemistry (6th Edition)
6th Edition
ISBN: 9780134302386
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 6, Problem 95E
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Chapter 6 Solutions
Introductory Chemistry (6th Edition)
Ch. 6 - Q1. How many atoms are there in 5.8 mol helium?
a....Ch. 6 - A sample of pure silver has a mass of 155g How...Ch. 6 - How many carbon atoms are there in a 12.5kg sample...Ch. 6 - Q4. Which sample contains the greatest number of...Ch. 6 - Q5. What is the average mass (in grams) of a...Ch. 6 - Q6. How many moles of O are in 1.6 mol of?
1.6 mol...Ch. 6 - Q7. How many grams of Cl are in?
Ch. 6 - Q8. Which sample contains the greatest number of F...Ch. 6 - Q9. The compound is 35.8% A by mass. What mass of...Ch. 6 - Q10. Which compound has the highest mass percent...
Ch. 6 - What is the mass percent N in C2H8N2 ? a. 23.3% N...Ch. 6 - Q12. A compound is 52.14% C, 13.13% H, and 34.73%...Ch. 6 - A compound has the empirical formula CH2O and a...Ch. 6 - Prob. 14SAQCh. 6 - Why is chemical composition important?Ch. 6 - 2. How can you efficiently determine the number of...Ch. 6 - How many atoms are in 1 mol of atoms?Ch. 6 - 4. How many molecules are in 1 mol of molecules?
Ch. 6 - 5. What is the mass of 1 mol of atoms for an...Ch. 6 - What is the mass of 1 mol of molecules for a...Ch. 6 - What is the mass of 1 mol atoms of each element?...Ch. 6 - 8. What is the mass of 1 mol of molecules of each...Ch. 6 - 9. The subscripts in a chemical formula give...Ch. 6 - 10 Write the conversion factors between moles of...Ch. 6 - Prob. 11ECh. 6 - 12. What is the mathematical formula for...Ch. 6 - How are the empirical formula and the molecular...Ch. 6 - 14. Why is it important to be able to calculate an...Ch. 6 - 15. What is the empirical formula mass of a...Ch. 6 - 16. How are the molar mass and empirical formula...Ch. 6 - How many mercury atoms are in 5.8mol of mercury?Ch. 6 - 18. How many moles of gold atoms do gold atoms...Ch. 6 - How many atoms are in each elemental sample? a....Ch. 6 - 20. How many moles of atoms are in each elemental...Ch. 6 - Complete the table. Element Moles Number of Atoms...Ch. 6 - 22. Complete the table.
Element Moles Number of...Ch. 6 - Consider these definitions. 1 doz =12 1gross =144...Ch. 6 - 24. A pure copper penny contains approximately ...Ch. 6 - 25. How many moles of tin atoms are in a pure tin...Ch. 6 - 26. A lead fishing weight contains 0.12 mol of...Ch. 6 - 27. A pure gold coin contains 0.145 mol of gold....Ch. 6 - 28. A helium balloon contains 0.46 g of helium....Ch. 6 - How many moles of atoms are in each elemental...Ch. 6 - 30. What is the mass in grams of each elemental...Ch. 6 - Complete the table. Element Mole Mass Ne ____...Ch. 6 - Complete the table. Element Moles Mass Cr 0.00442...Ch. 6 - 33. Apure silver ring contains mmol (millmol) Ag....Ch. 6 - A pure gold ring contains 0.0102 mmol (millmol)...Ch. 6 - How many aluminum atoms are in 3.78 g of aluminum?Ch. 6 - 36. What is the mass of platinum atoms?
Ch. 6 - How many atoms are in each elemental sample? a....Ch. 6 - Calculate the mass in grams of each elemental...Ch. 6 - 39. How many carbon atoms are in a diamond (pure...Ch. 6 - How many helium atoms are in a helium blimp...Ch. 6 - 41. How many titanium atoms are in a pure titanium...Ch. 6 - 42. How many copper atoms are in a pure copper...Ch. 6 - 43. Complete the table.
Element Mass Moles Number...Ch. 6 - 44. Complete the table.
Element Mass Moles Number...Ch. 6 - Which sample contains the greatest number of...Ch. 6 - Which sample contains the greatest number of...Ch. 6 - 47. Determine the number of molecules (or formula...Ch. 6 - 48. Determine the mass of each sample.
a. mol...Ch. 6 - 49. Complete the table.
Compound Mass Moles Number...Ch. 6 - 50. Complete the table.
Compound Mass Moles Number...Ch. 6 - A mothball, composed of naphthalene (C10H8), has a...Ch. 6 - Calculate the mass in grams of a single water...Ch. 6 -
53. How many molecules are in each sample?
a.
b....Ch. 6 -
54. Calculate the mass in grams of each...Ch. 6 - 55. A sugar crystal contains approximately sucrose...Ch. 6 - A salt crystal has a mass of 0.12 mg. How many...Ch. 6 - How much money, in dollars, dose 1 mol of pennies...Ch. 6 - A typical dust particle has a diameter of about...Ch. 6 - 59. Determine the number of moles of in mol .
Ch. 6 - 60. How many moles of O are in mol ?
Ch. 6 - 61. Which sample contains the greatest number of...Ch. 6 - Prob. 62ECh. 6 - Determine the number of moles of C in each sample....Ch. 6 - Determine the number of moles of H in each sample....Ch. 6 - 65. For each set of molecular models, write a...Ch. 6 - 66. For each set of molecular models, write a...Ch. 6 - 67. How many grams of are in 38.0 g of each...Ch. 6 - 68. Calculate the number of grams of sodium in...Ch. 6 - Iron is found in Earths crust as several different...Ch. 6 - 70. Lead is found in Earth’s crust as several lead...Ch. 6 - A 2.45-g sample of strontium completely reacts...Ch. 6 - A 4.78-g sample of aluminum completely reacts with...Ch. 6 - A 1.912g sample of calcium chloride is decomposed...Ch. 6 - Prob. 74ECh. 6 - 75. Copper(II) fluoride contains 37.42% F by mass....Ch. 6 - Silver chloride, used in silver plating, contains...Ch. 6 - In small amounts, the fluoride ion (often consumed...Ch. 6 - The iodide ion, usually consumed as potassium...Ch. 6 - 79. Calculate the mass percent composition of...Ch. 6 - Calculate the mass percent composition of carbon...Ch. 6 - 81. Calculate the mass percent composition of each...Ch. 6 - 82. Calculate the mass percent composition of each...Ch. 6 - 83. Calculate the mass percent composition of O in...Ch. 6 - Calculate the mass percent composition of Cl in...Ch. 6 - Various iron ores have different amounts of iron...Ch. 6 - 86. Plats need nitrogen to grow, so many...Ch. 6 - 87. A compound containing nitrogen and oxygen is...Ch. 6 - 88. A compound containing selenium and fluorine is...Ch. 6 - 89. Samples of several compounds are decomposed,...Ch. 6 - Samples of several compounds are decomposed, and...Ch. 6 - 91. The rotten smell of a decaying animal carcass...Ch. 6 - 92. Citric acid, the compound responsible for the...Ch. 6 - 93. These compounds are found in many natural...Ch. 6 - Calculate the empirical formula for each...Ch. 6 - 95. A sample of phosphorus burns in air and forms...Ch. 6 - A 2.241-g sample of nickel reacts with oxygen to...Ch. 6 - A sample of nitrogen reacts with chlorine to form...Ch. 6 - 98. A sample of phosphorus reacts with selenium...Ch. 6 - 99. A compound containing carbon and hydrgen has a...Ch. 6 - A compound containing phosphorus and oxygen has a...Ch. 6 - 101. The molar masses and empirical formulas of...Ch. 6 - The molar masses and empirical formulas of several...Ch. 6 - 103. A. pure copper cube has an edge length of...Ch. 6 - Prob. 104ECh. 6 - A drop of water has a volume of approximately 0.05...Ch. 6 - Fingernail-polish remover is primarily acetone...Ch. 6 - 107. Complete the...Ch. 6 - Prob. 108ECh. 6 - Determine the chemical formula of each compound...Ch. 6 - Prob. 110ECh. 6 - Prob. 111ECh. 6 - Prob. 112ECh. 6 - 113. A leak in the air conditioning system of an...Ch. 6 - 114. A leak in the air conditioning system of an...Ch. 6 - 115. Hydrogen is a possible future fuel. However,...Ch. 6 - Prob. 116ECh. 6 - Complete the table of compounds that contain only...Ch. 6 - 118. Complete the table of compounds that contain...Ch. 6 - Butanedione, a component of butter and body odor,...Ch. 6 - 120. Caffeine, a stimulant found in coffee and...Ch. 6 - 121. Nicotine, a stimulant found tobacco, has the...Ch. 6 - Prob. 122ECh. 6 - 123. A sample contains both KBr and KI in unknown...Ch. 6 - 124. A sample contains both and Ne in unknown...Ch. 6 - Ethanethiol (C2H6S) is a compound with a...Ch. 6 - 126. Methanethiol has a disagreeable odor and is...Ch. 6 - Prob. 127ECh. 6 - Prob. 128ECh. 6 - you can use the concepts in this chapter to obtain...Ch. 6 - Prob. 130ECh. 6 - 131. In 1996, the media reported that possible...Ch. 6 - 132. Using grammatically correct English...Ch. 6 - Discuss these questions with the group and record...Ch. 6 - Amylose is a polysaccharide that plants use to...
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- Estimating the radius of a lead atom. (a) You are given a cube of lead that is 1.000 cm on each side. The density of lead is 11.35 g/ cm3. How many atoms of lead are in the sample? (b) Atoms are spherical; therefore, the lead atoms in this sample cannot fill all the available space As an approximation, assume that 60% of the space of the cube is filled with spherical lead atoms. Calculate the volume of one lead atom from this information. From the calculated volume (V) and the formula (4/3) 3 for the volume of a sphere, estimate the radius (r) of a lead atom.arrow_forwardReference Section 5-2 to find the atomic masses of 12C and 13C, the relative abundance of 12C and 13C in natural carbon, and the average mass (in u) of a carbon atom. If you had a sample of natural carbon containing exactly 10,000 atoms, determine the number of 12C and 13C atoms present. What would be the average mass (in u) and the total mass (in u) of the carbon atoms in this 10,000-atom sample? If you had a sample of natural carbon containing 6.0221 1023 atoms, determine the number of 12C and 13C atoms present What would be the average mass (in u) and the total mass (in u) of this 6.0221 1023 atom sample? Given that 1 g = 6.0221 1023 u, what is the total mass of I mole of natural carbon in units of grams?arrow_forwardCopper atoms. (a) What is the average mass of one copper atom? (b) Students in a college computer science class once sued the college because they were asked to calculate the cost of one atom and could not do it. But you are in a chemistry course, and you can do this. (See E. Felsenthal, Wall Street Journal, May 9, 1995.) If the cost of 2.0-mm diameter copper wire (99.9995% pure] is currently 41.70 for 7.0 g, what is the cost of one copper atom?arrow_forward
- The density of a mixture of gases may be calculated by summing the products of the density of each gas and the fractional volume of space occupied by that gas. (Note the similarity to the calculation of the molar mass of an element from the isotopic masses and fractional abundances.) Assume dry air with CO2 removed is 20.96% (by volume) oxygen. 78.11% nitrogen, and 0.930% argon. Determine the density of argon.arrow_forwardConsider the following data for three binary compounds of hydrogen and nitrogen: %H (by Mass) %N (by Mass) I 17.75 82.25 II 12.58 87.42 III 2.34 97.66 When 1.00 L of each gaseous compound is decomposed to its elements, the following volumes of H2(g) and N2(g) are obtained: H2(L) N2(L) I 1.50 0.50 II 2.00 1.00 III 0.50 1.50 Use these data to determine the molecular formulas of compounds I, II, and III and to determine the relative values for the atomic masses of hydrogen and nitrogen.arrow_forwardThe age of the universe is unknown, but some conclude from measuring Hubbles constant that the age is about 18 billion years old, which is about four times the age of Earth. If so, calculate the age of the universe in seconds. If you had a sample of carbon with the same number of carbon atoms as there have been seconds since the universe began, determine whether you could measure this sample on a laboratory balance that can detect masses as small as 0.1 mg.arrow_forward
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