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
ANTONII [103]
2 years ago
13

Prepare a list of objects around you that are electroplated​

Chemistry
1 answer:
DedPeter [7]2 years ago
8 0

Answer:

Hello! Some household items that are electroplated include kitchenware, such as metal pots and pans, door handles, mobile phones, and coins. An electroplated object is coated by electrolytic deposition with chromium, silver, or another metal.

You might be interested in
Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol.
Brut [27]

Answer:

<em>293.99 g </em>

OR

<em>0.293 Kg</em>

Explanation:

Given data:

Lattice energy of Potassium nitrate (KNO3) = -163.8 kcal/mol

Heat of hydration of KNO3 = -155.5 kcal/mol

Heat to absorb by KNO3 = 101kJ

To find:

Mass of KNO3 to dissolve in water = ?

Solution:

Heat of solution = Hydration energy - Lattice energy

                           = -155.5 -(-163.8)

                           = 8.3 kcal/mol

We already know,

1 kcal/mol = 4.184 kJ/mole

Therefore,

= 4.184 kJ/mol x 8.3 kcal/mol

= 34.73 kJ/mol

Now, 34.73 kJ of heat is absorbed when 1 mole of KNO3 is dissolved in water.

For 101 kJ of heat would be

= 101/34.73

= 2.908 moles of KNO3

Molar mass of KNO3 = 101.1 g/mole

Mass of KNO3 = Molar mass x moles

                         = 101.1 g/mole  x  2.908

                         = 293.99 g

                         = 0.293 kg

<em><u>293.99 g potassium nitrate has to dissolve in water to absorb 101 kJ of heat. </u></em>     

4 0
3 years ago
What is the formula of copper sulphate?​
mylen [45]

COPPER SULPHATE =CuSO4

4 0
3 years ago
Read 2 more answers
A solution is prepared by adding 0.0231moles of H3O+ ions to 3.33L of water. What is the pH of this solution
MrMuchimi

Answer:

2.15

Explanation:

For this question, we have to remember the <u>pH formula</u>:

pH~=~-Log[H_3O^+]

By definition, the pH value is calculated when we do the -Log of the concentration of the <u>hydronium ions</u> (H_3O^+). So, the next step is the calculation of the <u>concentration</u> of the hydronium ions. For this, we have to use the <u>molarity formula</u>:

M=\frac{mol}{L}

We already know the number of moles (0.0231 moles) and the volume (3.33 L). So, we can plug the values into the molarity formula:

M=\frac{0.0231~moles}{3.33~L}=0.00693~M

With this value, now we can calculate the pH value:

pH~=~-Log[0.00693~M]~=~2.15

<u>The pH would be 2.15</u>

I hope it helps!

8 0
3 years ago
• Describe how ultrasound and infrasound are used in specific industrial applications and provide detailed examples.
xeze [42]

Ultrasound is sound or vibrations, having an ultrasonic frequency, particularly as used in medical imaging. Ultrasound is more commonly used in medical terminology than in industry. Infrasound is sound waves with frequencies below the lower limit of human audibility.

8 0
3 years ago
In a laboratory investigation, an HCl(aq) solution with a pH value of 2 is used to determine the molarity of a KOH(aq) solution.
guapka [62]

Answer:

blue

Explanation:

KOH is a base therefore it's pH will be above seven. According to table M when tested with the indicator bromcreeol green The solution will turn blue

5 0
3 years ago
Other questions:
  • 30. What is the Bronsted base of H2PO4- + OH- ⟶HPO42- + H2O?
    8·1 answer
  • Please help if you can help me, you can have all my points and be brainlest!
    10·1 answer
  • 2 attempts left Click the "draw structure" button to launch the drawing utility. Draw one product formed when the following dien
    14·1 answer
  • What is the name of th branch of science that specifically studies the conversion of chemical energy to electrical energy and vi
    8·1 answer
  • Mn(NO3)2(aq)+2KOH(aq) MN(OH)2(s)+2KNO3(aq)
    8·2 answers
  • What is the vapor pressure of ethanoic acid at 105°C?
    8·1 answer
  • How many moles of H20 are produced by 4.8 moles of O2?<br> 2H2 +O2 -----&gt; 2H20
    15·1 answer
  • Is it A? <br> NEED HELP ASAP PLEASE
    11·2 answers
  • Lesson A.1 Key term crossword
    11·1 answer
  • End the name of the second element with the suffix _____.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!