The temperature at which phase changes occur is highly dependent on the electrostatic forces between the molecules in the substance.
The forces that hold molecules together are called intermolecular forces. These intermolecular forces affect the temperature at which phase changes occur. The statement about phase changes and electrostatic forces that is correct is that; "the temperatures at which a substance changes phases indicate the relative strength of the forces between molecules in the substance."
There are three states of matter, solid liquid and gas. The order of intermolecular forces in all the states of matter are not the same. The order of strongest collective electrostatic forces to weakest collective electrostatic forces is; solid, liquid, gas.
When water boils, the forces between water molecules break, and the bonds between the atoms in water are unchanged.
When a sample of calcium carbonate is cooled, the forces strengthen, and the molecule structure becomes more rigid.
If the boiling point of acetone is lower than the boiling point of ethanol, then, the intermolecular forces in ethanol are stronger than the intermolecular forces in acetone.
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When warm air rises and cool air sinks towards earth surface. what is this known as <u>convection currents.</u>
Explanation:
Convection currents not only occurs in the air but also in other fluids like water. In the air, they are responsible for the blowing of winds of the atmosphere . In the oceans, they are responsible for ocean currents. Convection currents also occur in the mantle and are responsible for tectonic plate movements.
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Answer: The boiling point of a sample of Propanone at 180 kPa is 75 C. The correct answer is 2.
Explanation:
Propanone is more commonly known under the name "acetone." The boiling point of this compound at 180 kPa will be 75 C. It is an organic compound and its formula is (CH3)2CO.
This compound does not any color, it is highly flammable, and volatile. This compound does have a distinguished odor. It is used in labs, in industry settings, and in the home for various things. The human body does produce this compound naturally and the body disposes of this compound.
You omitted what it was raised to the power in 1.3 x 10's gallons of water, so i will put it up as 1.3 x 10^15 gallons of water and solve with it
Answer:1,083,333 days
Explanation:
Total amount of water held by lake Michigan= 1.3 x 10^15 gallons of water
Amount of water Chicago uses per day =Chicago uses 1.2 x 10^9 gallons of water /day
Therefore,
Number of days water would last if it doesnt rain = Total gallons provided by lake Michigan/ Total gallons consumed per day
=1.3 x 10^15 gallons of water/ 1.2 x 10^9 gallons of water /day
= 1,083,333 days
