Physics of Everyday Phenomena
9th Edition
ISBN: 9781259894008
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
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Chapter 19, Problem 5CQ
To determine
Whether the mass number or the atomic number, determines the chemical properties of an element.
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Students have asked these similar questions
If a neutral element has 8 neutrons and 7 electrons, which expression correctly identifies the element?
A.15/7 N
B. 8/15 O
C. 15/8 O
D. 7/8 O
E. None of these
61.) While researching for her class presentation, karen has read that natural occuring Gallium consists of 60% Ga (atomic mass=68.911) and 40 % of Ga(atomic mas= 70.9311). What is the average atomic mass of Ga?
Element X has three naturally occurring
isotopes. The masses (amu) and %
abundances of the isotopes are given in the
table below. The average atomic mass of
the element is
Isotope
Mass
40x
13.01 40.10
41X
6.98
41.00
44X
79.99
43.98
a. 39.68
O b. 43.26
c. 39.07
O d. 38.64
Chapter 19 Solutions
Physics of Everyday Phenomena
Ch. 19 - Prob. 1CQCh. 19 - Prob. 2CQCh. 19 - Prob. 3CQCh. 19 - Prob. 4CQCh. 19 - Prob. 5CQCh. 19 - Prob. 6CQCh. 19 - Prob. 7CQCh. 19 - Prob. 8CQCh. 19 - Prob. 9CQCh. 19 - Prob. 10CQ
Ch. 19 - Prob. 11CQCh. 19 - Prob. 12CQCh. 19 - Prob. 13CQCh. 19 - Prob. 14CQCh. 19 - Prob. 15CQCh. 19 - Prob. 16CQCh. 19 - Prob. 17CQCh. 19 - Prob. 18CQCh. 19 - Prob. 19CQCh. 19 - Prob. 20CQCh. 19 - Prob. 21CQCh. 19 - Prob. 22CQCh. 19 - Prob. 23CQCh. 19 - Prob. 24CQCh. 19 - Prob. 25CQCh. 19 - Prob. 26CQCh. 19 - Prob. 27CQCh. 19 - Prob. 28CQCh. 19 - Prob. 29CQCh. 19 - Prob. 30CQCh. 19 - Prob. 31CQCh. 19 - Prob. 32CQCh. 19 - Prob. 33CQCh. 19 - Prob. 34CQCh. 19 - Prob. 35CQCh. 19 - Prob. 36CQCh. 19 - Prob. 37CQCh. 19 - Prob. 1ECh. 19 - Prob. 2ECh. 19 - Prob. 3ECh. 19 - Prob. 4ECh. 19 - Prob. 5ECh. 19 - Prob. 6ECh. 19 - Prob. 7ECh. 19 - Prob. 8ECh. 19 - Prob. 9ECh. 19 - How many half-lives must go by tor the...Ch. 19 - Prob. 11ECh. 19 - Prob. 12ECh. 19 - Prob. 1SPCh. 19 - Prob. 2SPCh. 19 - Prob. 3SPCh. 19 - Prob. 4SP
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- How many kilograms of water are needed to obtain the 198.8 mol of deuterium, assuming that deuterium is 0.01500% (by number) of natural hydrogen?arrow_forwardWhich formula may be used for the momentum of all particles, with or without mass?arrow_forwardUnreasonable Results The relatively scarce naturally occurring calcium isotope 48Ca has a halflife at about 21016y. (a) A small sample of this isotope is labeled as having an activity of 1.0 Ci. What is the mass of the 48Ca in the sample? (b) What is unreasonable about this result? (c) What assumption is responsible?arrow_forward
- Find the atomic numbers, mass numbers, and neutron numbers for (a) 2958Cu,(b) 1124Na , (c) 84210Po(d) 2045Caand(e) 82206Pb -arrow_forwardData from the appendices and the periodic table may be needed for these problems. Unreasonable Results (a) Repeat Exercise 31.57 but include the 0.0055% natural abundance of 234U with its 2.45105y halflife. (b) What is unreasonable about this result? (c) What assumption is responsible? (d) Where does the 234U come from if it is not primordial?arrow_forwardQ10. Estimate the age of a wooden sample from an archaeological site, given its ¹4C content is 18% of the expected modern ¹4C content. With a half-life of ¹4C 5730 years, calculate the age of the wood.arrow_forward
- Which of the following best describes the atom? I - Large-mass positive charges are found inside the nucleus. II - Smaller-mass negative charges are found outside the nucleus. III - Large-mass neutral charges are found outside the nucleus. O I & II O I & III O II & III O I, II, & IIIarrow_forwardMass number = 10 Nuclear charge = 3 Li 6.941 Lithium What is wrong with the model of a lithium atom and how should it be corrected? Type your response.here ker notes Sig acer $4 % & 7 8 9. 4. 5 u r yarrow_forwardBy READING the N vs t graph shown below, determine No & the half-life. N (x10¹ atoms) 120 90. 60. 30. 1 2 3 4 5 6 7 8 9 10 t(y) No = half-life = atomsarrow_forward
- 18. DETAILS MY NOTES ASK YOUR TEACHER State the changes in the values of the mass number and the atomic number of an element, when it undergoes beta decay. O The mass number does not change and the atomic number decreases by 2. O The mass number does not change and the atomic number increases by 1. O The mass number decreases by 4 and the atomic number increases by 1. O The mass number increases by 2 and the atomic number increases by 1. 19. DETAILS MY NOTES ASK YOUR TEACHER The decay rate ON, for N number of radioactive nuclei is dt dN = -AN What is meant by higher decay constant A? O The half-life is longer. O The decay energy is lower. O The activity is lower. O The probability of decay per second is higher.arrow_forwardTwo nuclei, N1 and N2, have the same mass number. In N1 we have Z=N, while in N2 we have |ZN| = 4. Assuming that you could switch off the Coulomb force, which between N1 and N2 would have higher energy? O a. N2 O b. N1 Clear my choicearrow_forwardConsider the atomic species: 146C, 126C and 15,N. Which ones have the same number of neutrons? a. None of them b. 126C and 15,N C. All three O d. 146C and 15,N e. 146C and 126Carrow_forward
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