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EBK CHEMICAL PRINCIPLES IN THE LABORATO
11th Edition
ISBN: 8220100546068
Author: SLOWINSKI
Publisher: YUZU
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Textbook Question
Chapter 13, Problem 2ASA
The model consists of balls and sticks.
a. How many holes should be in the ball you select for the
b. How many holes should be in the ball you select for the
c. How many holes should be in the ball you select for the
The electrons in the molecule are paired, and each stick represents a valence electron pair.
d. How many sticks do you need? ____________
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B. Indicate which of the following statements is TRUE or FALSE. If your answer is FALSE
kindly Explain.
a. An element’s atomic number is equal to the number of protons in the nuclei of
any of its atoms.
b. The symbol for an element’s atomic number is A.
c. A neutral atom with Z = 4 must have 4 electrons.
d. A neutral atom with A = 4 must have 4 electrons.
e. An atom with 7 protons and 7 neutrons will have A = 14.
f. An atom with 7 protons and 7 neutrons will have Z = 14.
g. A neutral atom with 7 electrons and 7 neutrons will have A = 14.
Maps
[References]
Americium-241 is an isotope of americium used in household smoke detectors. This element has 11 known isotopes, none of which occurs in nature, but must be made in the
laboratory.
a. Give the number of protons in an atom of the isotope americium-242.
Number of protons
b. Give the number of electrons in an atom of the isotope americium-242.
Number of electrons
c. Give the number of neutrons in an atom of the isotope americium-242.
Number of neutrons =
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3. Write the letter of the term that correctly completes the sentence. Elements are different because their
atoms contain different numbers of
a. electrons
b, protons
d. nuclei
hestal number of protons and neutrons
c. neutrons
Chapter 13 Solutions
EBK CHEMICAL PRINCIPLES IN THE LABORATO
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
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- Which statements about subatomic particles are false?a. Protons and electrons have charges of the same magnitude butopposite sign.b. Protons have about the same mass as neutrons.c. Some atoms don’t have any protons.d. Protons and neutrons have charges of the same magnitude butopposite signs.arrow_forwardWater contains small amounts of the element fluorine, which helps to strengthen tooth enamel and prevent cavities. What would you expect to happen to the fluorine element when it is added to drinking water? a. Fluorine would lose an electron and would be found as HF. b. Fluorine would gain a proton, becoming a radioactive isotope. c. Fluorine would gain an electron and would be found as F- or HF. d.Fluorine would form a covalent bond with water.arrow_forwardWhich statement about the three fundamental particles is false? a. The charge of a proton is equal in magnitude but opposite in sign to the charge of an electron. b. Atoms consist primarily of protons, neutrons and electrons. c. Knowledge of the function of these fundamental particles is essential to understanding chemical reactions. d. The fundamental particles are the basic building blocks of atoms. e. The mass of an electron or a neutron is very small compared to the mass of a proton.arrow_forward
- 11. State whether the following elements are metals, nonmetals, or metalloids. a. Potassium b. Phosphorus C. Silicon d. lodine 12. Identify the principal type of energy (kinetic or potential) that is exhibited by each of the following. a. A piece of coal b. A falling rock ||| c. A compressed metal spring d. A rolling soccer ball on a level fieldarrow_forward16. Give complete symbols of each atom, including the atomic number and the mass number. a. a magnesium atom with 12 protons and 12 neutrons b. a magnesium atom with 12 protons and 13 neutrons c. a xenon atom with 54 protons and 77 neutronarrow_forwardSulfur is a bright yellow solid at room temperature. It is one of the components in gunpowder, matches, and fireworks. It is added to rubber to make it tougher (vulcanization) and to topical ointments for the treatment of skin disorders. a. What is the molecular formula? b. How many electrons and protons are there in an atom of sulfur? c. Two atoms of sulfur combine with two atoms of chlorine. Is this compound a molecule? What is its name and formula? d. How many neutrons are there in the isotope S-36? e. The naturally occurring isotopes of sulfur, their atomic masses, and abundances are: S-32 :31.97207 amu – 94.93% S-33 : 32.97146 amu – 0.76 % S- 34: 33.96786 amu – 4.29 % S- 36 :35.96708 amu – 0.02 % What is the average atomic mass for sulfur? Show the detailed solution. f. How many atoms are there in 12.55 grams of elemental sulfur (S) ? g. What is the mass of a billion atoms of sulfur? h. Sulfur can combine with oxygen in many different ways. Give five examples of that compound and…arrow_forward
- In chemical reactions, sodium (Na) is more likely to behave similarly to which element? a. Potassium (k) b. Magnesium (Mg) c. Fluorine (F) d. Iron (Fe)arrow_forwardMagnesium has an atomic number of 12. Which of the following statements is true of a neutral magnesium atom? a. It has 12 protons, 12 electrons, and 12 neutrons. b. It has 12 protons, 12 electrons, and six neutrons. c. It has six protons, six electrons, and no neutrons. d. It has six protons, six electrons, and six neutronarrow_forwardWhich statements about subatomic particles are false?a. Protons and electrons have charges of the same magnitude but opposite signs.b. Protons have about the same mass as neutrons.c. Some atoms don’t have any protons.d. Protons and neutrons have charges of the same magnitude but opposite signs.arrow_forward
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