Use the References to access important values if needed for this question.[References]1 ptsM)1A1 ptsM)8AH 2A3A4A 5A 6A 7A HeLi Be1 pts(M)BCNO F NeNa Mg 38 48 5B 6B 78 8B ¬ 1B 28 AI Si PS CI Ar1 pts 2reqK Ca Sc Ti v CrFe Co Ni Cu Zn Ga Ge As Se Br KrRb SrY Zr Nb Mo Tc Ru1 pts(M)Pd AgIn Sn Sb Te I XeCs Ba La HT TaTI Pb Bị Po At Rn1 pts 2reqFr Ra Ac Rf Ha1 ptsM)Ce Pr NdTb Dy Ho Er Tm Yb LuTh Pa U Np Pu Am CmEm Md1 ptsM)1 pts 2reqWrite the complete electron configuration for the cobalt atom.ptsM)Using NOBLE GAS notation write the electron configuration for the nickel atom.pts 2reqSubmit AnswerRetry Entire Group3 more group attempts remainingPreviousNextEmail InstructorSave aCengage Learning | Cengage Technical Support

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Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 92AE: In the opening scenes of the movie Raiders of the Lost Ark, Indiana Jones tries to remove a gold...

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You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react gas X with gas Y to make the products, you get the following data (all at the same pressure and temperature): 1. volume gas X + 2 volumes gas Y2 volumes compound I 2. volumes gas X + 1 volume gas Y2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y.
In the opening scenes of the movie Raiders of the Lost Ark, Indiana Jones tries to remove a gold idol from a booby-trapped pedestal. He replaces the idol with a bag of sand of approximately equal volume. (Density of gold = 19.32 g/cm3; density of sand 2 g/cm3.) a. Did he have a reasonable chance of not activating the mass-sensitive booby trap? b. In a later scene, he and an unscrupulous guide play catch with the idol. Assume that the volume of the idol is about 1.0 L. If it were solid gold, what mass would the idol have? Is playing catch with it plausible?
A materials engineer has filed for a patent for a new alloy to be used in golf club heads. The composition by mass ranges from 25 to 31% manganese, 6.3 to 7.8% aluminum, 0.65 to 0.85% carbon, and 5.5 to 9.0% chromium, with the remainder being iron. What are the maximum and minimum percentages of iron possible in this alloy? Use Figure 2.12 to snake a prediction about how the density of this alloy would compare with that of iron; justify your prediction.
Which part of the description of a compound or element refers to its physical properties and which to its chemical properties? (a) The colorless liquid ethanol bums in air. (b) The shiny metal aluminum reacts readily with orange-red bromine
Calculate the average density of a single Al-27 atom by assuming that it is a sphere with a radius of 0.143 nm. The masses of a proton, electron, and neutron are 1.67261024g,9.10941028g, and 1.67491024g, respectively. The volume of a sphere is 4r3/3, where r is its radius. Express the answer in grams per cubic centimeter. The density of aluminum is found experimentally to be 2.70 g/cm3. What does that suggest about the packing of aluminum atoms in the metal?
The nuclei of a limited number of atoms are investigated to determine the number of protons and neutrons in each. The following table summarizes the results: helium 2 protons, 2 neutrons carbon 6 protons, 6 neutrons nitrogen 7 protons, 7 neutrons a. Form a scientific law based on these limited measurements. b. What other measurements could be carried out to further confirm this law? c. Devise a theory that would explain your law. d. How would the following results affect your theory and your law? uranium 92 protons, 143 neutrons chromium 24 protons, 28 neutrons
¡n a sample of a gaseous substance, more than 99% of the overall volume of the sample is empty space. How is this fact reflected in the properties of a gaseous substance compared with the properties of a liquid or solid substance?
You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react gas X with gas Y to make the products, you get the following data (all at the same pressure and temperature): 1 volume gas X + 2 volumes gas Y 2 volumes compound I 2 volumes gas X + 1 volume gas Y 2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y.
True or false? If a theory is disproven, then all of the observations that support that theory are also disproven. Explain.
You may have noticed that when water boils, you can see bubbles that rise to the surface of the water. Which of the following is inside these bubbles? Explain. a. air b. hydrogen and oxygen gas c. oxygen gas d. water vapor e. carbon dioxide gas

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