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Alex777 [14]
4 years ago
8

In the following example circled the valence electrons and identify how many valence electrons are present

Chemistry
1 answer:
klio [65]4 years ago
8 0
What is the following example
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Please help! Will mark as brainliest ! how many grams of iron metal do you expect to be produced when 245 grams of an 80.5 perce
Nutka1998 [239]
That’s the answer I guess

7 0
4 years ago
What must be true for a spontaneous reaction in an electrochemical cell? The overall cell potential must be positive. The overal
yanalaym [24]

Answer:

The overall cell potential must be positive.

Explanation:

What must be true for a spontaneous reaction in an electrochemical cell?

  • The overall cell potential must be positive. YES. This is by convention.
  • The overall cell potential must be negative. NO. By convention, a negative cell potential means the cell is not spontaneous.
  • The cathode’s standard reduction potential must be positive. NO. It only has to be higher than the anode's standard reduction potential.
  • The cathode’s standard reduction potential must be negative. NO. It only has to be higher than the anode's standard reduction potential.
7 0
3 years ago
You add 100. 0 g of water at 60. 0°c to 100. 0 g of ice at 0. 00°c. Some of the ice melts and cools the water to 0. 00°c. When t
LuckyWell [14K]

The Mass of ice is 69.12g.

What is mass?

It is a dimensionless quantity that expresses a particle or object's mass. The accepted unit of mass under the International System (SI) is the kilogram.

What is temperature?

Temperature is a measure of the average kinetic energy of the particles inside an object. The temperature increases cause these particles to move more quickly. It is possible to measure temperature using a thermometer or a calorimeter.

first calculate the amount of heat as follows;

q= mass of water C= (0°C-55°C)

=100.0g (4.186J/g°c) (-55°C)

=-23023J

Heat lost by water is gained by ice,

-q=m*ΔH

-23023J= m*333J/g

= 69.12g

Therefore, Mass of ice is 69.12g.

Learn more about mass from the given link.

brainly.com/question/338808

#SPJ4

6 0
2 years ago
Draw the lewis structure with the atoms arranged as hclo. include all non-bonding electronsand non-zero formal charges. do not d
Ira Lisetskai [31]
An image is attached depicting the Lewis structure of HClO with the atoms arranged in that order. The result is a single bond between each atom. We can calculate the formal charge of each atom with the following formula:

Formal charge = (Valence electrons) - (electrons shared in bonds) - (non-bonded electrons)

H: Formal charge = 1 - 1 - 0 = 0

Cl: Formal charge = 7 - 2 - 4 = +1

O: Formal charge = 6 - 1 - 6 = -1

This structure is not the actual way these atoms arrange. The atoms will actually arrange in the order of H-O-Cl to form hypochlorous acid with a single bond between the three atoms and formal charges of 0 on each atom.

8 0
4 years ago
Example 1: Calculate the concentration of NaOH
docker41 [41]

Answer:

2.4 %

Explanation:

.15 mole  *  ( 23 + 16 + 1) gm / mole =  6 gm in solution

  250 cm^3 of water solvent weighs  250 gm

6 gm / 250 gm = 2.4 %

6 0
2 years ago
Read 2 more answers
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