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Serggg [28]
3 years ago
9

Which of the following statements about gases is not correct? A. They have much lower densities than solids or liquids. B. They

form homogenous mixtures regardless of the nature of gases. C. They have strong intermolecular forces causing the particles to cling together. D. They have high compressibility. E. They do not possess a shape of their own.
Chemistry
1 answer:
IgorLugansk [536]3 years ago
7 0

Answer:

C. They have stong intermolecular forces causing the particles to cling together.

Explanation:

Have you ever seen images where gases are all spread out and floating around? Well if you have, this is because the intermolecular forces are weak and are spreak apart. Contrary to this incorrect statement, solids have the stongest intermolecular force and cling together.

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5TH GRADE SCIENCE!!!!!!
Yuri [45]

Answer:

Phase changes that require a loss in energy are condensation and freezing.

Explanation:

4 0
3 years ago
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Alkanes and alkenes differ in that alkene molecules contain at least one:
Zarrin [17]

Answer:

Double bond

Explanation:

an alkene is a unsaturated hydrocarbon which means that it contain at least one double bond

4 0
3 years ago
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A stock solution of sodium sulfate NaSO4 has a concentrate of 1.00 m. The volume of this solution is 50 ml. What volume of 0.25
mylen [45]
<h3>Answer:</h3>

200 mL

<h3>Explanation:</h3>

Concept tested: Dilution formula

We are given;

  • Concentration of stock solution as 1.00 M
  • Volume of the stock solution as 50 mL
  • Molarity of the dilute solution as 0.25 M

We are required to calculate the volume of diluted solution;

  • The stock solution is the original solution before dilution while diluted solution is the solution after dilution.
  • Using the dilution formula we can determine the volume of diluted solution;

M1V1 = M2V2

Rearranging the formula;

V2 = M1V1 ÷ M2

     = (1.00 M × 50 mL) ÷ 0.25 M

     = 200 mL

Therefore, a volume of 200mL of 0.25 M solution could be made from the stock solution.

5 0
3 years ago
A 1.85 kg textbook is sitting on a bookshelf 2.23 m above the floor. How much potential energy does it have?
neonofarm [45]

Answer:

\boxed {\boxed {\sf 40.4299 \ Joules}}

Explanation:

Potential energy is energy due to position. It is the product of mass, height, and acceleration due to gravity.

PE= m \times g \times h

The mass of the textbook is 1.85 kilograms. Assuming this is on Earth, the acceleration due to gravity is 9.8 meters per square second. The height is 2.23 meters.

  • m= 1.85 kg
  • g= 9.8 m/s²
  • h= 2.23 m

Substitute the values into the formula.

PE = 1.85 \ kg \times 9.8 \ m/s^2 \times 2.23 \ m

Multiply the first 2 numbers together.

PE=18.13 \ kg*m/s^2 *2.23 \ m

Multiply again.

PE= 40.4299 \ kg*m^2/s^2

  • 1 kilogram square meter per square second (1 kg*m²/s²) is equal to 1 Joules (J)
  • Our answer of 40.4299 kg*m²/s² is equal to 40.4299 J

PE= 40.4299 \ J

The textbook has <u>40.4299 Joules of potential energy.</u>

7 0
3 years ago
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