Human Biology Concepts and Current Issues; Modified MasteringBiology with Pearson EText -- ValuePack Access Card -- for Human Biology: Concepts and Current Issues
8th Edition
ISBN: 9780134560779
Author: Johnson, Michael D.
Publisher: Pearson Education
expand_more
expand_more
format_list_bulleted
Question
Chapter 2, Problem 15TY
Summary Introduction
Introduction:
Z (atomic number) is the total number of protons (Np) in an atom, which is present inside the nucleus. In an electrically neutral atom, Np is equal to the number of electrons (Ne). On the other hand, the total number of protons (Np) and neutrons (Nn) in the atom’s nucleus makes up the mass number (A), which is also used as a measure of atomic weight.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The atomic number gives thea. number of neutrons in the nucleus.b. number of protons in the nucleus.c. weight of the atom.d. number of protons in the valence shell.
What is an alloy?
A. A compound of two metals
B. An element of two metals
C. A mixture of two metals
D. A molecule of two metals
1.1. An atom of element X has an atomic number of 14 and a mass number of 30. Which of the following statements is correct? (A) An atom of sodium has 14 protons, 14 electrons, and 14 neutrons.(B) An atom of sodium has 14 protons, 16 electrons, and 14 neutrons(C) An atom of sodium has 14 protons, 14 electrons, and 16 neutrons.(D) An atom of sodium has 14 protons, 16 electrons, and 16 neutrons.1.2. The ability of carbon to form four covalent bonds with a variety of atoms is(A) Isomerism(B) Tetravalence(C) Hydrolysis(D) Quadravalence1.3. Water resists changing its temperature because of its … (A) High heat of vaporization(B) Low specific heat(C) High specific heat(D) Low heat of vaporization1.4. A solution where [H+] < [OH−] is more:(A) Acidic(B) Basic(C) Neutral(D) None of the above1.5. Malnourishment results when there is(A) A diet that does not provide enough fatty acids(B) A diet with short-term absence of one or more essential nutrients(C) A diet that does not provide enough…
Chapter 2 Solutions
Human Biology Concepts and Current Issues; Modified MasteringBiology with Pearson EText -- ValuePack Access Card -- for Human Biology: Concepts and Current Issues
Ch. 2 -
1. Who do you think should be responsible for...Ch. 2 - Prob. 2QCCh. 2 - Describe the electrical charges and relative...Ch. 2 -
2. Explain why two atoms of hydrogen tend to...Ch. 2 -
3. Explain why polar and charged molecules tend...Ch. 2 - How is a covalent bond different from an ionic...Ch. 2 - Compare and contrast potential energy and kinetic...Ch. 2 - Distinguish between saturated and unsaturated...Ch. 2 - Describe the process known as dehydration...Ch. 2 - Explain why proteins come in an almost unlimited...
Ch. 2 -
9. Discuss the importance of enzymes in living...Ch. 2 -
10. Describe the role of ATP in energy transfer...Ch. 2 - If a molecule of starch is repeatedly hydrolyzed,...Ch. 2 - Which of these molecules would be described as...Ch. 2 -
3. _______bonds form between the oxygen and...Ch. 2 - 13C and 14C are ______ of carbon. a. isotopes b....Ch. 2 - Which of the following substances has the lowest...Ch. 2 - When sugar is dissolved in water, sugar is the...Ch. 2 - A monosaccharide is to a polysaccharide as an...Ch. 2 -
8. Which of these bonds is the easiest to...Ch. 2 -
9. The primary structure of a protein is...Ch. 2 -
10. DNA ultimately contains the instructions for...Ch. 2 - If one strand of DNA has the sequence...Ch. 2 - Which of the following is true regarding the...Ch. 2 -
13. Which of the following is true regarding...Ch. 2 - Synthesis of proteins requires the input of...Ch. 2 - Prob. 15TYCh. 2 - Prob. 1AWKCh. 2 - Prob. 2AWKCh. 2 - Many people use cholesterol-lowering drugs to...Ch. 2 - Prob. 4AWKCh. 2 -
5. Coca-Cola is a very acidic drink; its pH is...
Knowledge Booster
Similar questions
- An isotope of sodium (Na) has a mass number of 22. How many neutrons does it have? a. 11 b. 12 c. 22 d. 44arrow_forwardWhich statement is true of all atoms that are anions?(A) The atom has more electrons than protons.(B) The atom has more protons than electrons.(C) The atom has fewer protons than does a neutral atomof the same element.(D) The atom has more neutrons than protons.arrow_forwardIodine has 37 known isotopes. Therefore, the atomic mass has a range of 108-144 amu. Which of the following statements concerning iodine is correct? A) The isotopes of iodine have between 55 and 91 protons. B) An atom of iodine can have between 55 and 91 neutrons. C) The isotopes of iodine will always have the same number of neutrons, but the protons can vary. D) The isotopes of iodine have between 108 and 144 neutrons, but the number of protons will not vary.arrow_forward
- Which element is a metal? A. C B. Rn C. CI D. Crarrow_forwardThe nucleus of an atom contains: a. neutrons and electrons b. protons and electrons c. protons only d. neutrons and protons e. neutrons onlyarrow_forwardWhich of the following statements is incorrect? a. Isotopes have the same atomic number and different mass numbers. b. Atoms have about the same number of electrons as protons. c. All molecules consist of atoms. d. Free radicals are dangerous because they emit energyarrow_forward
- Refer to the following figure (first three rows of the periodic table) to answer the questions below. What element does not react with other elements? Group of answer choices A. hydrogen B. helium C. oxygen D. siliconarrow_forwardWhat is a proton? A. A negatively charged particle B. A positively charged particle C. An element on the periodic table D. Any particle found in the nucleusarrow_forwardThe atomic mass of an element can be used to determine A) the chemical properties of the element B) the number of protons in the element C) the number of neutrons in the element D) the number of protons plus neutrons in the element E) both the number of protons and the chemical properties of the elementarrow_forward
- Which is true about carbon atoms? a. Each of the orbitals in the second shell has one electron in it. b. Only the 2p orbitals have unpaired electrons c. Carbon has high electronegativity d. Carbon binds hydrogen with polar covalent bondsarrow_forwardUsing the figure, answer the following questions.a. What is the molar composition of the vapor in equilibrium with a boilingliquid that has a composition of 60% A and 40% B?b. A sample of vapor has the composition 50% A and 50% B. What is the composition of the boiling liquid that produced this vapor?arrow_forwardMiller and Urey created a reaction chamber that simulated conditions in Earths early atmosphere to test the hypothesis that______. a. lightning-fueled atmospheric reactions could have produced organic compounds b. meteorites contain organic compounds c. organic compounds form at hydrothermal vents d. oxygen prevents formation of organic compoundsarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning