Study Guide for Chemistry: The Central Science
13th Edition
ISBN: 9780321949288
Author: Theodore E. Brown, James C. Hill
Publisher: PEARSON
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Chapter 11, Problem 86AE
A 2.144-g sample of phosgene, a compound used as a chemical warfare agent during World WarI, contains 0.260 g of carbon, 0.347 g of oxygen, and 1.537 g of chlorine. What is the empiricalformula of this substance?
a.
b.
c.
d.
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Students have asked these similar questions
A. Molar mass of an Element = Atomic mass of the Element
Molar mass of a Compound = Molecular mass of the Compound
Element
Atomic Mass
Molar Mass
12.01 g/mol
23.0 g/mol
Examples:
C
12.01 amu
Na
23.0 amu
Examples:
Compound
Number
Molecular Mass
Molar Mass
of Atoms
CO2
C -1
C-1x 12.01 (atomic mass of C)
12.01 amu
%3D
O-2
O-2x16.00 (atomic mass of O) = 32.00 amu
44.01 g/mol
44.01 amu
Pt 1 x 195.08 = 195.08 amu
CI - 2 x 35.45 = 70.9 amu
= 28.02 amu
6.06 amu
Pt 1
CI- 2
PIC2(NH3)2
N-2
N-2 x 14.01
300.06g g/mol
H-6
H-6x 1.01
%3D
Total
300.06 amu
An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass.
a. If you assume 100.0 g of the compound, what is the mass in grams of osmium that are present in the compound?
b. How many moles of osmium are present in 100.0 g of the compound?
c. If you assume 100.0 g of the compound, what is the mass in grams of chlorine that are present in the compound?
d. How many moles of chlorine are present in 100.0 g of the compound?
e. Determine the empirical formula of the unknown compound.
f. What is the IUPAC name of the compound?
Chapter 11 Solutions
Study Guide for Chemistry: The Central Science
Ch. 11.2 - Only two isotopes of copper occur naturally:63Cu...Ch. 11.2 - 2.36 Rubidium has two naturally occurring...Ch. 11.3 - a. Thomson’s cathode-ray tube (Figure 2.49) and...Ch. 11.3 -
2.38 Consider the mass spectrometer shown in...Ch. 11.4 - Naturally occurring magnesium has the following...Ch. 11.4 - Mass spectrometry is more often applied to...Ch. 11.5 - 2-41 For each of the following elements, write its...Ch. 11.5 - Locate each of the following elements in the...Ch. 11.6 - 2-43 For each of the following elements, write its...Ch. 11.6 - 2.44 The elements of group 4A show an interesting...
Ch. 11.7 - 2.45 The structural formulas of the compounds...Ch. 11.7 - 2.46 Ball-and-stick representations of benzene, a...Ch. 11 - Prob. 1DECh. 11 - 2.59 Using the periodic table to guide you,...Ch. 11 -
2.71 Name the following ionic compounds:
a....Ch. 11 -
2.83
What is a functional group?
What functional...Ch. 11 - The element lead (Pb) consists of four naturally...Ch. 11 - Prob. 5ECh. 11 - The molecules have the same molecular formula...Ch. 11 - A sample of an ionic compound containing iron and...Ch. 11 -
The compound dioxane, which is used as a solvent...Ch. 11 - If 3.00 g of titanium metal is reacted with 6.00 g...Ch. 11 -
2.48 Two substances have the same molecular and...Ch. 11 - 2.49 Write the empirical formula corresponding to...Ch. 11 - Determine the molecular and empirical formulas of...Ch. 11 - 251 How many hydrogen atoms are un each of the...Ch. 11 - Prob. 14ECh. 11 - 253 Write the molecular and structural formulas...Ch. 11 - 2-54 Write the molecular and structural formulas...Ch. 11 - Fill in the gaps in the following table’Ch. 11 - 2.56 Fill in the gaps in the following...Ch. 11 - Prob. 19ECh. 11 - Prob. 20ECh. 11 - Predict the chemical formulas of the compounds...Ch. 11 - Prob. 22ECh. 11 - Prob. 23ECh. 11 - Predict whether each of the following compounds is...Ch. 11 - 2.66 Which of the following are ionic, and which...Ch. 11 - Prob. 26ECh. 11 - Prob. 27ECh. 11 -
2.69 Give the names and charges of the cation and...Ch. 11 - Give the names and charges of the cation and anion...Ch. 11 - Prob. 30ECh. 11 -
Give the chemical formula for each of the...Ch. 11 -
2.75 Give the name or chemical formula, as...Ch. 11 - Prob. 33ECh. 11 -
2.T Give the name or Chemical formula, as...Ch. 11 - Prob. 35ECh. 11 - Prob. 36ECh. 11 - Assume that you encounter the following sentences...Ch. 11 - a. What is a hydrocarbon? b. Pentane is the alkane...Ch. 11 - Prob. 39ECh. 11 -
2.85 Chloropropane is derived from propane by...Ch. 11 - Prob. 41ECh. 11 - Suppose a scientist repeats the Millikan oil-drop...Ch. 11 -
2.88 The natural abundance of 3He is...Ch. 11 - A cube of gold that is 1.00 cm on a side has a...Ch. 11 -
2.90 The diameter of a rubidium atom is 4.95 A....Ch. 11 -
2.91
Assuming the dimensions of the nucleus and...Ch. 11 - (a) What is the significance of the critical...Ch. 11 -
2.93 The nucleus of 6Li is a powerful absorber of...Ch. 11 - The element oxygen has three naturally occurring...Ch. 11 - Using a suitable reference such as the CRC...Ch. 11 - There are two different isotopes of bromine atoms....Ch. 11 -
2.99 It is common in mass spectrometry to assume...Ch. 11 - From the following list of elements—Ar, H, Ga, Al,...Ch. 11 - Prob. 54ECh. 11 -
2.102 The explosion of an atomic bomb releases...Ch. 11 - Prob. 56ECh. 11 - Prob. 57ECh. 11 -
2.105 From the molecular structures shown here,...Ch. 11 -
2.106 Name each of the following oxides. Assuming...Ch. 11 - Prob. 60ECh. 11 - Prob. 61ECh. 11 - Give the chemical names of each of the following...Ch. 11 -
2.112 Many familiar substances have common,...Ch. 11 -
2.113 Because many ions and compounds have very...Ch. 11 -
2.114 In what part of the atom does the strong...Ch. 11 - In the following diagram, the white spheres...Ch. 11 - In the following digram, the white spheres...Ch. 11 - Prob. 68ECh. 11 - Balance these equations by providing the missing...Ch. 11 - Write the balanced equation for the reaction that...Ch. 11 - Prob. 71ECh. 11 - Which of the following is the correct formula...Ch. 11 - Prob. 73AECh. 11 - Prob. 74AECh. 11 - Calculate the percentage of potassium by mass in...Ch. 11 - Which of the following samples contains the fewest...Ch. 11 - In dichloromethane, CH2Cl2 (= 1.60D)), the...Ch. 11 - Prob. 78AECh. 11 -
How many oxygen atoms are in (a) 0.25 mol...Ch. 11 - Prob. 80AECh. 11 - Prob. 81AECh. 11 - What is the mass, in grams, of 6.33 mol of NaHC03...Ch. 11 - What is the mass, in grams, of (a) 0.50 mol of...Ch. 11 - How many chlorine atoms are in 12.2 g of CCL4? a....Ch. 11 -
a. How many nitric acid molecules are in 4.20 g...Ch. 11 - A 2.144-g sample of phosgene, a compound used as a...Ch. 11 - A 5.325-g sample of methyl benzoate, a compound...Ch. 11 -
Cyclohexane a commonly used organic solvent, is...Ch. 11 - Prob. 89AECh. 11 - Prob. 90IECh. 11 - Decomposition of KCIO3 is sometimes used to...Ch. 11 - Propane, C3 H8 (Figure 3.8), is a common fuel used...Ch. 11 -
Methanol, CH3OH, reacts with oxygen from air in a...Ch. 11 - When 24 mol of methanol and 15 mol of oxygen...Ch. 11 - a. When 1.50 mol of Al and 3.00 mol of Cl2 combine...Ch. 11 - Molten gallium reacts with arsenic to form the...Ch. 11 -
When a 2.00-g strip of zinc metal is placed in...
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