19. Barium has a higher first ionization energy than strontium, based on their positions in the periodic table. A) True B) False 20. A particle has 34 protons, 44 neutrons, and 36 electrons. Therefore, it has a charge of 2+. A) True B) False 21. Stannous acetate is also called tin (IV) acetate. A) True B) False 22. An amount of 12.01 g of carbon contains the same number of moles as 18.02 g of water. A) True B) False 23. All atoms of the same element have the same mass. A) True B) False 24. When a solution is made, there is no chemical reaction. The solution can be separated into its components by chemical means. A) True B) False

19. Barium has a higher first ionization energy than strontium, based on their positions in the periodic table. A) True B) False 20. A particle has 34 protons, 44 neutrons, and 36 electrons. Therefore, it has a charge of 2+. A) True B) False 21. Stannous acetate is also called tin (IV) acetate. A) True B) False 22. An amount of 12.01 g of carbon contains the same number of moles as 18.02 g of water. A) True B) False 23. All atoms of the same element have the same mass. A) True B) False 24. When a solution is made, there is no chemical reaction. The solution can be separated into its components by chemical means. A) True B) False

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter3: Stoichiometry

Section: Chapter Questions

Problem 44E: The element silver (Ag) has two naturally occurring isotopes: 109 Ag and 107Ag with a mass of...

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Concept explainers

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.

Question

Pls help ASAP on all true and false questions.

19. Barium has a higher first ionization energy than strontium, based on their positions in the periodic table.
A) True
B) False
20. A particle has 34 protons, 44 neutrons, and 36 electrons. Therefore, it has a charge of 2+.
A) True
B) False
21. Stannous acetate is also called tin (IV) acetate.
A) True
B) False
22. An ount of 12.01 g of carbon contains the same number of moles as 18.02 g of water.
A) True
B) False
23. All atoms of the same element have the same mass.
A) True
B) False
24. When a solution is made, there is no chemical reaction. The solution can be separated into its components by
chemical means.
A) True
B) False

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The element silver (Ag) has two naturally occurring isotopes: 109 Ag and 107Ag with a mass of 106.905 u. Silver consists of 51.82% 107Ag and has an average atomic mass of 107.868 u. Calculate the mass of 109Ag.
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The average atomic masses of some elements may vary, depending upon the sources of their ores. Naturally occurring boron consists of two isotopes with accurately known masses ( 10B, 10.0129 amu and 11B, 11.0931 amu). The actual atomic mass of boron can vary from 10.807 to 10.8 19, depending on whether the mineral source is from Turkey or the United States. Calculate the percent abundances leading to the two values of the average atomic masses of boron from these two countries.
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These questions concern the work of J. J. Thomson: From Thomson’s work, which particles do you think he would feel are most important in the formation of compounds (chemical changes) and why? Of the remaining two subatomic particles, which do you place second in importance for forming compounds and why? Come up with three models that explain Thomson’s findings and evaluate them. To be complete you should include Thomson’s findings.