Pearson eText Conceptual Physical Science -- Instant Access (Pearson+)
6th Edition
ISBN: 9780134857107
Author: Paul Hewitt, John Suchocki
Publisher: PEARSON+
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Chapter 18, Problem 17RCQ
To determine
An equation for the half reaction should be written in which a potassium, k is oxidized
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Students have asked these similar questions
(a) A physics lab instructor is working on a new demonstration. She attaches two identical copper spheres with mass m = 0.180 g to cords of length L as shown in the figure.
A
Both spheres have the same charge of 6.80 nC, and are in static equilibrium when
=
4.95°. What is L (in m)? Assume the cords are massless.
0.150
Draw a free-body diagram, apply Newton's second law for a particle in equilibrium to one of the spheres. Find an equation for the distance between the two spheres in terms of L and 0, and use this expression in your
Coulomb force equation. m
(b) What If? The charge on both spheres is increased until each cord makes an angle of 0 = 9.90° with the vertical. If both spheres have the same electric charge, what is the charge (in nC) on each sphere in this case?
13.6
☑
Use the same reasoning as in part (a), only now, use the length found in part (a) and the new angle to solve for the charge. nC
A proton moves at 5.20 x 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.40 × 10³ N/C. Ignore any gravitational effects.
(a) Find the time interval required for the proton to travel 6.00 cm horizontally.
1.15e-7
☑
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. ns
(b) Find its vertical displacement during the time interval in which it travels 6.00 cm horizontally. (Indicate direction with the sign of your answer.)
5.33e-3
☑
Your response is off by a multiple of ten. mm
(c) Find the horizontal and vertical components of its velocity after it has traveled 6.00 cm horizontally.
| ↑ +
jkm/s
A proton moves at 5.20 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.40 103 N/C. Ignore any gravitational effects.
(a) Find the time interval required for the proton to travel 6.00 cm horizontally.
(b) Find its vertical displacement during the time interval in which it travels 6.00 cm horizontally. (Indicate direction with the sign of your answer.)
Chapter 18 Solutions
Pearson eText Conceptual Physical Science -- Instant Access (Pearson+)
Ch. 18 - What does sulfur dioxide have to do with acid...Ch. 18 - How do humans generate the air pollutant sulfur...Ch. 18 - Prob. 14RCQCh. 18 - Prob. 15RCQCh. 18 - What elements have the greatest tendency to behave...Ch. 18 - Prob. 17RCQCh. 18 - What happens to a reducing agent as it reduces?Ch. 18 - What is electrochemistry?Ch. 18 - What is the purpose of the salt bridge in a...Ch. 18 - Prob. 21RCQ
Ch. 18 - What is the prime difference between a battery and...Ch. 18 - Prob. 23RCQCh. 18 - What is electrolysis, and how does it differ from...Ch. 18 - Prob. 25RCQCh. 18 - Prob. 26RCQCh. 18 - What metal coats a galvanized nail?Ch. 18 - Prob. 28RCQCh. 18 - What is iron forced to accept during cathodic...Ch. 18 - What happens to the polarity of oxygen atoms as...Ch. 18 - Show that the hydroxide ion concentration in an...Ch. 18 - When the hydronium ion concentration of a solution...Ch. 18 - Show that an aqueous solution having a pH of 5 has...Ch. 18 - When the pH of a solution is 1, the concentration...Ch. 18 - Show that the pH of a solution is 0.301 when its...Ch. 18 - Each year about 1.6 107 (16 million) metric tons...Ch. 18 - Prob. 44TASCh. 18 - Prob. 45TARCh. 18 - The three chemicals listed below are all very weak...Ch. 18 - Rank in order of decreasing pH the rain that fell...Ch. 18 - Prob. 48TARCh. 18 - Review the concept of electronegativity in Section...Ch. 18 - Rank the following molecules from least oxidized...Ch. 18 - An acid and a base react to form a salt, which...Ch. 18 - Identify the acid or base behavior of each...Ch. 18 - Prob. 53ECh. 18 - Prob. 54ECh. 18 - The main component of bleach is sodium...Ch. 18 - Prob. 56ECh. 18 - Prob. 57ECh. 18 - Some molecules are able to stabilize a negative...Ch. 18 - Prob. 59ECh. 18 - Within a neutral solution of supercritical water...Ch. 18 - What is the concentration of hydronium ions in a...Ch. 18 - Can an acidic solution be made less acidic by...Ch. 18 - Bubbling carbon dioxide into water causes the pH...Ch. 18 - Pour vinegar onto beach sand from the Caribbean,...Ch. 18 - What happens to the pH of soda water as it loses...Ch. 18 - Prob. 66ECh. 18 - Prob. 67ECh. 18 - Prob. 68ECh. 18 - Prob. 69ECh. 18 - Hydrogen sulfide, H2S, burns in the presence of...Ch. 18 - Unsaturated fatty acids, such as C12H22O2, react...Ch. 18 - The type of iron that the human body needs for...Ch. 18 - Chemical equations need to be balanced not only in...Ch. 18 - Prob. 74ECh. 18 - Why does a salt bridge last only so long?Ch. 18 - How does turning on the radio while you are...Ch. 18 - What are some key advantages that a fuel-cell...Ch. 18 - Why would a miniaturized fuel cell require a...Ch. 18 - Prob. 79ECh. 18 - Prob. 80ECh. 18 - Copper atoms have a greater tendency to be reduced...Ch. 18 - Clorox is a laundry bleaching agent used to remove...Ch. 18 - Pennies manufactured after 1982 are made of zinc...Ch. 18 - Prob. 84ECh. 18 - Prob. 85ECh. 18 - Water is 88.88% oxygen by mass. Oxygen is exactly...Ch. 18 - Why is the air over an open flame always moist?Ch. 18 - Upon ingestion, grain alcohol, C2H6O, is...Ch. 18 - Your body creates chemical energy from the food...Ch. 18 - Do the digestion and subsequent metabolism of...Ch. 18 - Why is it easier for the body to excrete a polar...Ch. 18 - What is the relationship between the hydroxide ion...Ch. 18 - Prob. 2RATCh. 18 - Sodium hydroxide, NaOH, is a strong base, which...Ch. 18 - Prob. 4RATCh. 18 - Why do we use the pH scale to indicate the acidity...Ch. 18 - When the hydronium ion concentration equals 1...Ch. 18 - Prob. 7RATCh. 18 - Prob. 8RATCh. 18 - How does an atum's electronegativity relate to its...Ch. 18 - Why does a battery that has thick zinc walls last...
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