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
Amiraneli [1.4K]
3 years ago
5

Zinc is used as a coating for steel to protect the steel from environmental corrosion. If a piece of steel is submerged in an el

ectrolysis bath for 24 minutes with a current of 6.5 Amps, how many grams of zinc will be plated out? The molecular weight of Zn is 65.38, and Zn+2 + 2e– → Zn. Question 7 options: A) 3.17 g of Zn B) 1.09 g of Zn C) 6.34 g of Zn D) 12.68 g of Zn
Chemistry
1 answer:
sweet [91]3 years ago
3 0

Answer:

A) 3.17 g of Zn

Explanation:

Let's consider the reduction of Zn(II) that occurs in an electrolysis bath.

Zn⁺²(aq) + 2e⁻ → Zn(s)

We can establish the following relations:

  • 1 min = 60 s
  • 1 A = 1 C/s
  • The charge of 1 mole of electrons is 96,468 C (Faraday's constant).
  • When 2 moles of electrons circulate, 1 mole of Zn is deposited.
  • The molar mass of Zn is 65.38 g/mol

The mass of Zn deposited under these conditions is:

24min \times \frac{60s}{1min} \times \frac{6.5C}{s} \times \frac{1mol\ e^{-} }{96,468C} \times \frac{1molZn}{2mol\ e^{-}}  \times \frac{65.38g}{1molZn} = 3.17 g

You might be interested in
Please help me i will give brain list​ tap the question
mr_godi [17]

Answer:

molecular formulas of the hydrocarbons

6 0
3 years ago
Read 2 more answers
PLEASE HELP IM TAKING A TEST!!! Consider the reaction 4FeS2 + 11O2 → 2Fe2O3 + 8SO2. If 8 moles of FeS2 react with 15 moles of O2
chubhunter [2.5K]

Answer:

c-)O2

Explanation:

7 0
2 years ago
0.0009547863= x^-1.644
Andrej [43]

Answer: 68.71317831

Explanation:

5 0
3 years ago
your teacher wants you to perform an experiment that will demonstrate a chemical property. which experiment should you choose
geniusboy [140]

Answer:

Measure the pH of different household chemicals

Explanation:

To demonstrate a chemical property using an experiment, measuring the pH of different household chemicals will be the best way. The pH is the degree of hydrogen or hydroxyl ion concentration in a solution.

Chemical properties tell us about what a substance can do.

It shows if a substance will react with other substances or not.

Examples are flammability, rusting of iron, precipitation, decomposition of water by electric current e.t.c.

Measuring the pH is a chemical property determination procedure.

The pH points to the degree of acidity or alkalinity of a solution.

6 0
3 years ago
Give the chemical symbols for the following elements: (a) potassium, (b) tin, (c) chromium, (d) boron,(e) barium, (f) plutonium,
Ilia_Sergeevich [38]

Answer:

A) Alkili Metal

B) Basic Metal

C)  Transition Metal

D) Semimetal

E) Alkiline Earth

F) Actinide

G) Nonmetal

H) Noble Gas

I) Transitional Metal  

Hope This Helps

8 0
4 years ago
Other questions:
  • How demanding is lime and cement in our world's economy?
    7·1 answer
  • Convert 1.7 Kg to cg
    11·2 answers
  • The forensic technician at a crime scene has just prepared a luminol stock solution by adding 16.0 g of luminol to H2O creating
    14·1 answer
  • eneegy is converted from solar to chemical in Process A and then from one form if chemical to another in Process B. Process A is
    11·1 answer
  • A primary amine contains a five-membered carbon ring. The degree of unsaturation for the five-membered carbon ring is equal to t
    6·1 answer
  • • Draw lewis dot structures for an atom of each of following elements:
    7·1 answer
  • What is the mass of NaCl required to make 140 grams of a 12% solution of NaCl in water?
    11·2 answers
  • How many moles of HCI can be formed when 2 mol of hydrogen gas react with chlorine
    5·1 answer
  • What is a net ionic equation?
    10·1 answer
  • How to recover ballpoint ink washed off from a paper?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!