Why do phase changes occur?

1 answer:

6 0

Simple answer: because of heat,

Simple explanation:
If you look at it at a molecular level, the intermolecular forces between the water molecules are decreasing. The heat provided is giving it enough energy for the water molecules to overcome these attractive forces. Thus phase change accrues

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Put these atoms in order of increasing radius: Na, Mg,Cl, P

Grace [21]

Answer:

Cl < P < Mg < Na

Explanation:

Cl must have the smallest radius because it is located to the right of the remaining elements on the same row. P must have the second smallest radius because it is located to the right of the remaining elements on the same row. Mg must have the Third smallest radius because it is located to the right of Na on the same row. Therefore, Na has the Largest radius.

I hope it helps.

7 0

3 years ago

Unless the gasoline tank of a car is refilled, the car will stop moving when it runs out of gas. What happened to the energy tha

GaryK [48]

Answer: The correct answer is option d.

Explanation: Energy stored into gasoline is converted into another form of energy. This was very well explained on the basis of Law of conservation of energy. This law states that energy is conserved in the system which means that energy is converted from one form to another form.

The energy stored into gasoline is converted into mechanical energy which helps the car to move and some of the energy is lost in the form of heat.

Hence, the correct answer is Option d.

3 0

4 years ago

A solution is made using 200.0 mL of methanol (density 0.792 g/mL) and 985.1 mL of water (density 1.000 g/mL). What is the mass

DaniilM [7]

Answer: The mass percent of methanol in solution is 13.85 %

Explanation:

To calculate the mass of water, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$