EBK ANATOMY & PHYSIOLOGY
5th Edition
ISBN: 9780321888013
Author: Hoehn
Publisher: VST
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Textbook Question
Chapter 2, Problem 5CYU
An element has a mass of 207 and has 125 neutrons in its nucleus. How many protons and electrons does it have and where are they located?
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What if there are a different number of Neutrons?
Sometimes elements have a different number of neutrons than usual, so therefore have a different atomic mass. This is what we call an Isotope (a variant form of an element which has the same number of protons but a differing number of neutrons).
Sometimes we’ll see Isotopes labeled with their new mass like this:
14C = this is Carbon 14. Notice it has a different mass than what is on your periodic table
The average mass of all the isotopes is defined as an element’s Atomic Weight. Can you answer questions about these Isotopes?
ELEMENT
ATOMIC MASS
NUMBER OF PROTONS
NUMBER OF NEUTRONS
14C
A
B
C
15N
D
E
F
2H
G
H
I
Use your table to look up the number of protons, remember that never changes!
Iodine 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.
How many atoms do we have?
Chapter 2 Solutions
EBK ANATOMY & PHYSIOLOGY
Ch. 2 - What form of energy is found in the food we eat?Ch. 2 - What form of energy is used to transmit messages...Ch. 2 - What type of energy is available when we are...Ch. 2 - What two elements besides H and N make up the bulk...Ch. 2 - An element has a mass of 207 and has 125 neutrons...Ch. 2 - How do the terms atomic mass and atomic weight...Ch. 2 - What is the meaning of the term molecule?Ch. 2 - Why is sodium chloride (NaCl) considered a...Ch. 2 - Blood contains a liquid component and living...Ch. 2 - What kinds of bonds form between water molecules?
Ch. 2 - Oxygen (8O) and argon (18A) are both gases. Oxygen...Ch. 2 - Assume imaginary compound XY has a polar covalent...Ch. 2 - Which reaction type-synthesis, decomposition, or...Ch. 2 - Why are many reactions that occur in living...Ch. 2 - What specific name is given to decomposition...Ch. 2 - Water makes up 6080% of living matter. What...Ch. 2 - Salts are electrolytes. What does that mean?Ch. 2 - Which ion is responsible for increased acidity?Ch. 2 - To minimize the sharp pH shift that occurs when a...Ch. 2 - Prob. 23CYUCh. 2 - What are the monomers of carbohydrates called?...Ch. 2 - What is the animal form of stored carbohydrate...Ch. 2 - Prob. 22CYUCh. 2 - What does the name amino acid tell you about the...Ch. 2 - What is the primary structure of proteins?Ch. 2 - What are the two types of secondary structure in...Ch. 2 - What is the main event that molecular chaperones...Ch. 2 - How do enzymes reduce the amount of activation...Ch. 2 - How do DNA and RNA differ in the bases and sugars...Ch. 2 - What are two important roles of DNA?Ch. 2 - Glucose is an energy-rich molecule. So why do body...Ch. 2 - What change occurs in ATP when it releases energy?Ch. 2 - Which of the following forms of energy is the...Ch. 2 - All of the following are examples of the four...Ch. 2 - The mass number of an atom is (a) equal to the...Ch. 2 - A deficiency in this element can be expected to...Ch. 2 - Which set of terms best describes a proton? (a)...Ch. 2 - The subatomic particles responsible for the...Ch. 2 - Prob. 7MCCh. 2 - Which of the following does not describe a...Ch. 2 - In a beaker of water, the water-water bonds can...Ch. 2 - When a pair of electrons is shared between two...Ch. 2 - Molecules formed when electrons are shared...Ch. 2 - Which of the following covalently bonded molecules...Ch. 2 - Prob. 13MCCh. 2 - Factors that accelerate the rate of chemical...Ch. 2 - Prob. 15MCCh. 2 - Waters importance to living systems reflects (a)...Ch. 2 - Acids (a) release hydroxyl ions when dissolved in...Ch. 2 - Prob. 18MCCh. 2 - Prob. 19MCCh. 2 - A chemical has an amine group and an organic acid...Ch. 2 - Prob. 21MCCh. 2 - Enzymes are organic catalysts that (a) alter the...Ch. 2 - Define or describe energy, and explain the...Ch. 2 - Some energy is lost in energy energy conversion....Ch. 2 - Provide the atomic symbol for each of the...Ch. 2 - Consider the following information about three...Ch. 2 - How many moles of aspirin, C9H8O4, are in a bottle...Ch. 2 - Given the following types of atoms, decide which...Ch. 2 - What are hydrogen bonds and how are they important...Ch. 2 - Prob. 30SAQCh. 2 - Differentiate clearly between primary, secondary,...Ch. 2 - Prob. 32SAQCh. 2 - Describe the mechanism of enzyme action.Ch. 2 - Explain the importance of molecular chaperones.Ch. 2 - Explain why, if you pour water into a glass very...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which element has only one proton?arrow_forwardPolonium is a rare element with 33 radioisotopes. The most common one, 210Po, has 82 protons and 128 neutrons. When 210Po decays, it emits an alpha particle, which is a helium nucleus (2 protons and 2 neutrons). 210Po decay is tricky to detect because alpha particles do not carry very much energy compared to other forms of radiation. For example, they can be stopped by a single sheet of paper or a few inches of air. That is one reason that authorities failed to discover toxic amounts of 210Po in the body of former KGB agent Alexander Litvinenko until after he died suddenly and mysteriously in 2006. What element does an atom of 210Po become after it emits an alpha particle?arrow_forwardPolonium is a rare element with 33 radioisotopes. The most common one, 210Po, has 82 protons and 128 neutrons. When 210Po decays, it emits an alpha particle, which is a helium nucleus (2 protons and 2 neutrons). 210Po decay is tricky to detect because alpha particles do not carry very much energy compared to other forms of radiation. They can be stopped by, for example, a sheet of paper or a few inches of air. This property is one reason why authorities failed to discover toxic amounts of 210Po in the body of former KGB agent Alexander Litvinenko until after he died suddenly and mysteriously in 2006. What element does an atom of 210Po decay into after it emits an alpha particle?arrow_forward
- Magnesium 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 neutrons.arrow_forwardA nitrogen isotope with an atomic mass of 15, and an atomic number of 7, must have: 7 neutrons and 8 electrons 8 neutrons and 7 protons 7 electrons and 8 protons 8 protons and 7 neutrons 7 protons and 8 electronsarrow_forwardAccording to chemist John Dalton, if one mole of nitrogen is combined with three moles of hydrogen to form one mole of ammonia (knowing that nitrogen, with an atomic number of 7, has an atomic mass of 14, and hydrogen, with an atomic number of 1, has an atomic mass of 1), then this compound will have an atomic weight (or molecular mass) of: 14 grams per mole (14 daltons) 17 grams per mole (17 daltons) 20 grams per mole (20 daltons) 22 grams per mole (22 daltons) 43 grams per mole (43 daltons)arrow_forward
- Elements have varying numbers of protons, neutrons, and electrons.True or false?arrow_forwardwhat subatomic particle is present in the nucleus of an atom?arrow_forwardfor the first 10 atoms from the periodic table determine: the atom full name and chemical symbol atomic number atomic mass how many protons, Neutrons and electrons? Abundance in naturearrow_forward
- What may be the number of protons to number of neutrons ratio in our body? Explain Why?arrow_forwardwhich of the sub-atomic particles is commonly represented by this symbol:"e-"?arrow_forwardAn ion has 15 protons, 16 neutrons, and 18 electrons. The symbol for the ion is 31P3+. 31P3-. 31Ar3+. 34S+. 34S-.arrow_forward
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