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
Define "Mutarotation"
zubka84 [21]

Answer:

Mutarotation refers to the change in the optical rotation or optical activity of a solution due to the change in the equilibrium of the two anomers. It depends upon the optical activity and ratio of the anomeric forms in the solution.

To measure the optical rotation of a given solution, a polarimeter can be used and thus the ratio of the anomeric forms can be calculated.

3 0
3 years ago
What differs from between a radioactive isotope and a stable isotope
Digiron [165]

A stable isotope has just<em> the right number of neutrons for the number of protons </em>(the <em>n:p ratio</em>) to hold the nucleus together against the repulsions of the protons.

A radioactive isotope has either too few or too many neutrons for the nucleus to be stable,

The nucleus will then emit <em>alpha, beta, or gamma radiation</em> in an attempt to become more stable.  

7 0
4 years ago
The denser and thicker a liquid is, the higher the buoyancy of an object is. In other words, if the density of a certain fluid i
Marta_Voda [28]

Answer:

Yes this is true.

Explanation:

3 0
3 years ago
Alchemist made which of the following contributions to the development of chemistry?
a_sh-v [17]
Alchemists advanced the tools and procedures for working with chemicals. Alchemists also developed methods for sorting out mixtures and cleansing chemicals. They designed equipment that is still in use today including beakers, flasks, tongs, funnels, and the mortar and pestle. Also, Alchemists backed to an unbelievable variety of what would later be acquainted as chemical industries: basic metallurgy, metalworking, the invention of inks, dyes, paints, and cosmetics, leather-tanning, and the preparation of extracts and liquors.
6 0
3 years ago
Câu 1: Trong phân tử este (X) no, đơn chức, mạch hở có thành phần oxi chiếm 36,36 % khối lượng. Số đồng phân bố
enyata [817]
B..............................
3 0
3 years ago
Other questions:
  • What volume of 15.6M NH4OH is needed to make 500. mL of 3.00M solution?
    11·1 answer
  • How much lead (pb) is in 5.07 × 1012 atoms of lead? answer in units of mol?
    11·1 answer
  • What is 0.00055030 in Scientific form
    14·1 answer
  • I WILL GIVE BRAINLIST!!!!!![CM.04] A meteorologist observed satellite images to predict the weather in a city. She predicted two
    12·1 answer
  • 2H2+O2 2H2O .Calculate the moles of water formed when 14 moles of hydrogen react.
    6·1 answer
  • Give an example of one type of energy conversion (change to another form). Be sure to explain your example.
    11·1 answer
  • “While observing a chemical reaction, how can you tell which reactant is limiting?”
    14·1 answer
  • PLEASE HELP
    13·1 answer
  • 0.352 g sample of a diprotic acid is dissolved in water and titrated with 0.150 M NaOH.0.150 M NaOH. What is the molar mass of t
    14·1 answer
  • Write the electronic configuration of the first 20 element​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!