1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lakkis [162]
3 years ago
10

How many minutes will it take to plate out 4.50 g of Cu from a solution of Cu(NO3)2 (aq) onto the cathode of an electrolytic cel

l when 8.00 A of current are used? View Available Hint(s) How many minutes will it take to plate out 4.50 g of Cu from a solution of Cu(NO3)2 (aq) onto the cathode of an electrolytic cell when 8.00 A of current are used? 14.2 min 1.82 × 103 min 28.5 min 3.06 × 10−9 min Submit Return to Assignment
Chemistry
1 answer:
ipn [44]3 years ago
3 0

Answer:

It will take 28.5 minutes

Explanation:

<u>Step 1: </u>Data given

Mass of Cu = 4.50 grams

8.00 A of current are used

Molar mass of Cu = 63.5 g/mol

Step 2: Calculate time needed

Cu2+ →Electricity → Cu

we notice a flow of 2 electrons ⇒ This means the Faraday constant = 2F

Since Molar mass of Cu is 63.5 g/mol

63.5 grams of Cu is deposited by 2*96500 C

4.50 grams of Cu ((2*96500)/63.5)  * 4.50 = 13677.17 C

Q = It

13677.17 = 8t*60 seconds

t = 28.5 minutes

You might be interested in
Based on the information in the table, which of the following arranges the bonds in order of decreasing polarity?
patriot [66]

Polarity is the chemical property based on the electric charge and orientation of the poles. Al−O>H−Br>As−S is arranged in decreasing order of polarity. Thus, option d is correct.

<h3>What is polarity?</h3>

Polarity is a chemical property of the distribution of the electrical charges over their respective atom in the molecule joined by the bonds. The relation between the polarity and the difference in electronegativity is directly proportional.

The electronegativity difference between the elements are:

  • Al−O = 1.8
  • H−Br = 0.8
  • As−S = 0.4

As the electronegativity difference between Al−O = 1.8 is the highest it will have the highest polarity followed by H−Br = 0.8, and As−S = 0.4, with the lowest polarity.

Therefore, option D. Al−O>H−Br>As−S is arranged in decreasing order of polarity.

Learn more about electronegativity here:

brainly.com/question/25217877

#SPJ1

6 0
2 years ago
A chemical reaction in which compounds break up into simpler constituents is a _______ reaction.
klio [65]
C. decomposition reaction
8 0
3 years ago
The two most abundant gases in the atmosphere are select one:
Zielflug [23.3K]
I think that the answer is d
4 0
3 years ago
14. What characteristics of Earth's surface can be determined by using a topographic map?
Leno4ka [110]
The answer is letter a. Hill terrain, hill slope, and hill elevation
6 0
3 years ago
What type of stress results when two plates push against one another?
Natasha2012 [34]

When two plates push against each other shear stress will happem because they move in opposite directions. In this case the force of the stress pushes some of the crust in different directions. When this happens, a large part of the crust can break off, which makes the plate size smaller.

3 0
3 years ago
Other questions:
  • What is the oxidation number of chromium in dichromate ion, cr2o72-?
    7·1 answer
  • Which natural polymer makes up paper? A. starch B. nylon C. wool D. rubber
    9·1 answer
  • Ravi’s grandmother is suffering from diabetes. Her doctor advised her to take lassi with less fat content. Which of the followin
    13·1 answer
  • Which of these materials is an example of a conductor? (of electricity)
    11·2 answers
  • How does water enter the cell
    13·1 answer
  • Ravi cow gives 2 1/4 gallon Milk each day . How much is this in quarts
    6·1 answer
  • Which of the following are major influences on weather and climate?
    8·1 answer
  • Which of the following will produce a 2 molar solution of copper (II) chloride?
    6·1 answer
  • Which is the best reason for choosing the beaker for heating the solution?
    10·1 answer
  • . Based on their position in the periodic table, predict which (of the two elements given) will be more reactive Circle your cho
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!