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
VashaNatasha [74]
3 years ago
15

What are the electrons called in the lectrons called in the outermost energy level of an atom? Why are they important (10) (B) T

wo
Chemistry
1 answer:
koban [17]3 years ago
6 0

Answer:

This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.

Explanation:

They are important to an atom because the fewer valence electrons that the atom holds, the less stable it becomes.

You might be interested in
The compound CO is an example of a(n)
Vinil7 [7]
Covalent compound as it is a bond between two non-metals
6 0
4 years ago
A sample of carbon dioxide gas occuples a volume of 2.5L at standard temperature and pressure (STP). What will be the volume of
MArishka [77]

Answer:

The correct answer is 5.0 L

Explanation:

STP are defined as T=273 K and P= 1 atm

By using the ideal gas equation, we can calculate the number of moles (n) of the gas at a volume V=2.5 L:

PV= nRT

⇒n= (PV)/(RT) =(1 atm x 2,5 L)/(0.082 L.atm/K.mol x 273 K)= 0.112 mol

For a sample of argon gas, with the same number of moles (0.112 mol) but twice the temperature (T = 273 K x 2= 546 K):

V= (nRT)/P = (0.112 mol x 0.082 L.atm/K.mol x 546 K)/1 atm = 5.0 L

That is consistent with the fact that when a gas is heated, it expanses. So, if the temperature increases twice, the volume also increases twice.

5 0
3 years ago
Which of the following is NOT a postulate of the Kinetic Molecular Theory?
kotegsom [21]

Answer:

"3. Energy can either be destroyed or created. Its goes from one form to another."  

Explanation:

The third answer choice, "3. Energy can either be destroyed or created. Its goes from one form to another. " is related to the Law of Conservation of Energy from thermodynamics. Is it not a postulate of the Kinetic Molecular Theory.

<u>"1. Average Kinetic Energy of the system is a measure of the temperature of the system."</u>

Postulate of Kinetic Molecular Theory \checkmark

  • The average kinetic energy of the system is measured by its temperature and nothing else

<u>"2. Energy is conserved in the collisions between gas molecules.."</u>

Postulate of Kinetic Molecular Theory \checkmark

  • All collisions between gas molecules are perfectly elastic, meaning no energy is lost

<u>"3. Energy can either be destroyed or created. Its goes from one form to another.</u>

<u />\times NOT a Postulate of Kinetic Molecular Theory

  • Related to Conservation of Energy from thermodynamics

<u>"4. Gases travel in straight line until they collide with other gas molecules"</u>

Postulate of Kinetic Molecular Theory \checkmark

  • All gas molecules will travel in a straight line until they collide with other gas molecules or some object (e.g. a container)
8 0
3 years ago
Two shopping carts are pushed with the same force. One cart has a larger mass than the other. How does the mass of the shopping
Harman [31]
This would problem will be answered using the concept of momentum. Momentum is the mass times the velocity, where mass is inversely proportional to the velocity. This would mean that an object with greater mass will travel at a much lesser velocity, or vice versa.

Hence, the cart with the smaller mass will accelerate faster.
5 0
3 years ago
Read 2 more answers
I need halp on this plz
Harrizon [31]

1. light bones

2. hibernate

4 0
3 years ago
Other questions:
  • An unknown quantity of sugar was completely dissolved in water at 75 degrees Celsius to form a clear and colorless solution. The
    13·1 answer
  • 14. A solution with a pH of 13 is a ____.
    15·2 answers
  • What are atoms that have gained or lost electrons?
    14·2 answers
  • Which is the best example of how electromagnetic energy is used in everyday life?
    12·1 answer
  • Below is mgo. draw the structure of co2 and use curved arrows to show the movement of electron pairs. include lone electron pair
    12·2 answers
  • The caloric content of 0.50 cup of cottage cheese is 1.10 x 102 kcal. This is the amount of energy released when 0.50 cup of cot
    14·1 answer
  • How many grams of water will form if 10.54 g H2 react with 95.10 g O2?
    8·1 answer
  • What is the molarity of a solution in which 0.321 g of calcium chloride is dissolved in 1.45 L water?
    6·1 answer
  • 1.) Over the hour before the precipitation started falling where it did?
    12·2 answers
  • Part A
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!