Principles of General Chemistry
3rd Edition
ISBN: 9780073402697
Author: SILBERBERG, Martin S.
Publisher: McGraw-Hill College
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Chapter 2, Problem 2.89P
a)
Interpretation Introduction
Interpretation:Simplest whole-number ratio of
Concept introduction:Law of multiple proportions is defined as if any particular element which forms twodifferent compounds with two different elements, then the ratio of 1st element will alwaysbe fixed mass ratio in both compounds.
Mass percentage is calculated as mass of substance divided by total mass of sample, multiplied by
b)
Interpretation Introduction
Interpretation: The number of grams of oxygen per
Concept introduction:Law of multiple proportions is defined as if any particular element which forms twodifferent compounds with two different elements, then the ratio of 1st element will alwaysbe fixed mass ratio in both compounds.
Mass percentage is calculated as mass of substance divided by total mass of sample, multiplied by
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1. Provide the chemical formula (including brackets where appropriate) or systematic name for the following compounds.
(a) gold(I) hypoiodite
(b) HI(aq):
(f) Ca(ClO4)2·4H2O:
2. What mass (in g) of chlorine atoms are there in a sample that consists of 5e+23 molecules of molecular chlorine?
INSTRUCTIONS: Report your answer to 3 significant figures in scientific notation unless stated otherwise. DO NOT include the units in your answer.
An organic compound consists of carbon, hydrogen and nitrogen only.
Complete combustion of a 150. mg sample of this compound produced 0.261 g of carbon
dioxide.
Another sample of this compound weighing 1.1348 g contains 2.244 x 1022 atoms of nitrogen.
(i) Determine the empirical formula for this compound.
(ii) If a sample of this compound having the mass 3.780 x 103 mg contains 0.024839 moles
of the compound, determine the molecular formula.
Chapter 2 Solutions
Principles of General Chemistry
Ch. 2 - What is the key difference between an element and...Ch. 2 - List two differences between a compound and a...Ch. 2 - Which of the following are pure substances?...Ch. 2 - Classify each substance in Problem 2.3 as an...Ch. 2 - Each scene below represents a mixture. Describe...Ch. 2 - To which classes of matter—element, compound,...Ch. 2 - Identify the mass law that each of the following...Ch. 2 - Prob. 2.8PCh. 2 - (a) Does the percent by mass of each element in a...Ch. 2 - Prob. 2.10P
Ch. 2 - Prob. 2.11PCh. 2 - Prob. 2.12PCh. 2 - Prob. 2.13PCh. 2 - Prob. 2.14PCh. 2 - Prob. 2.15PCh. 2 - Prob. 2.16PCh. 2 - Show, with calculations, how the following data...Ch. 2 - Prob. 2.18PCh. 2 - Prob. 2.19PCh. 2 - Prob. 2.20PCh. 2 - Prob. 2.21PCh. 2 - Prob. 2.22PCh. 2 - Prob. 2.23PCh. 2 - Prob. 2.24PCh. 2 - Prob. 2.25PCh. 2 - Prob. 2.26PCh. 2 - Prob. 2.27PCh. 2 - Prob. 2.28PCh. 2 - Prob. 2.29PCh. 2 - Write the ZAX notation for each atomic depiction:Ch. 2 - Write the ZAX notation for each atomic depiction:Ch. 2 - Prob. 2.32PCh. 2 - Draw atomic depictions similar to those in Problem...Ch. 2 - Gallium has two naturally occurring isotopes,...Ch. 2 - Prob. 2.35PCh. 2 - Prob. 2.36PCh. 2 - Prob. 2.37PCh. 2 - Prob. 2.38PCh. 2 - Prob. 2.39PCh. 2 - Prob. 2.40PCh. 2 - Prob. 2.41PCh. 2 - Prob. 2.42PCh. 2 - Fill in the blanks: (a) The symbol and atomic...Ch. 2 - Prob. 2.44PCh. 2 - Prob. 2.45PCh. 2 - Prob. 2.46PCh. 2 - Given that the ions in LiF and in MgO are of...Ch. 2 - Prob. 2.48PCh. 2 - Prob. 2.49PCh. 2 - Prob. 2.50PCh. 2 - Prob. 2.51PCh. 2 - Prob. 2.52PCh. 2 - Prob. 2.53PCh. 2 - Prob. 2.54PCh. 2 - An ionic compound forms when calcium (Z=20) reacts...Ch. 2 - Prob. 2.56PCh. 2 - Prob. 2.57PCh. 2 - Prob. 2.58PCh. 2 - Prob. 2.59PCh. 2 - Prob. 2.60PCh. 2 - Write a formula for each of the following...Ch. 2 - Prob. 2.62PCh. 2 - Give the name and formula of the compound formed...Ch. 2 - Prob. 2.64PCh. 2 - Prob. 2.65PCh. 2 - Prob. 2.66PCh. 2 - Prob. 2.67PCh. 2 - Prob. 2.68PCh. 2 - Prob. 2.69PCh. 2 - Prob. 2.70PCh. 2 - Prob. 2.71PCh. 2 - Prob. 2.72PCh. 2 - Prob. 2.73PCh. 2 - Prob. 2.74PCh. 2 - Prob. 2.75PCh. 2 - Prob. 2.76PCh. 2 - Prob. 2.77PCh. 2 - Give the formula, name, and molecular mass of the...Ch. 2 - Prob. 2.79PCh. 2 - Prob. 2.80PCh. 2 - Prob. 2.81PCh. 2 - Prob. 2.82PCh. 2 - Prob. 2.83PCh. 2 - Prob. 2.84PCh. 2 - Prob. 2.85PCh. 2 - Prob. 2.86PCh. 2 - Prob. 2.87PCh. 2 - Prob. 2.88PCh. 2 - Prob. 2.89PCh. 2 - Scenes A— depict various types of matter on the...Ch. 2 - The scvcn most abundant ions in seawater make up...Ch. 2 - Prob. 2.92PCh. 2 - Prob. 2.93PCh. 2 - Prob. 2.94PCh. 2 - Prob. 2.95PCh. 2 - Prob. 2.96PCh. 2 - Dinitrogen monoxide (N2O;nitrousoxide) is a...Ch. 2 - Prob. 2.98PCh. 2 - Prob. 2.99PCh. 2 - Prob. 2.100PCh. 2 - A rock is 5.0% by mass fayalite (Fe2SiO4)7.0% by...Ch. 2 - The two isotopes of potassium with significant...Ch. 2 - Prob. 2.103PCh. 2 - Prob. 2.104PCh. 2 - Prob. 2.105PCh. 2 - Prob. 2.106P
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- The present average concentration (mass percent) of magnesium ions in seawater is 0.13%. A chemistry textbook estimates that if 1.00 × 108 tons Mg were taken out of the sea each year, it would take one million years for the Mg concentration to drop to 0.12%. Do sufficient calculations to either verify or refute this statement. Assume that Earth is a sphere with a diameter of 8000 mi, 67% of which is covered by oceans to a depth of 1 mi, and that no Mg is washed back into the oceans at any time.arrow_forwardGiven that the density of argon is 1.78 g/L under standard conditions of temperature and pressure, how many argon atoms are present in a room with dimensions 4.0 m 5.0 m 2.4 m that is filled with pure argon under these conditions of temperature and pressure?arrow_forwardChlorine exists mainly as two isotopes, 37Cl and 33Cl. Which is more abundant? How do you know?arrow_forward
- Chalky, white crystals in mineral collections are often labeled borax, which has the molecular formula Na2B4O7 10H2O, when actually they are partially dehydrated samples with the molecular formula Na2B4O7 5H2O, which is more stable under the storage conditions. Real crystals of borax are colorless and transparent. (a) Calculate the percent mass that the mineral has lost when it partially dehydrates. (b) Is the percent boron by mass the same in both compounds?arrow_forward3.117 For the oxides of iron, FeO, Fe2O3, and Fe3O4, describe how you would determine which has the greatest percentage by mass of oxygen. Would you need to look up any information to solve this problem?arrow_forward3.123 Most periodic tables provide molar masses with four or five significant figures for the elements. How accurately would you have to measure the mass of a sample of roughly 100 g to make a calculation of the number of moles of the chemical to have its significant figures limited by the molar mass calculation rather than the mass measurement?arrow_forward
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