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Maurinko [17]
3 years ago
14

The heat of fusion for water is the amount of energy that must be absorbed for water to ___. a.evaporate b.freeze a.boil d.melt

Chemistry
1 answer:
Vikki [24]3 years ago
7 0
The answer would be A. Evaporation. Heat of fusion in any types of matter is the amount of heat transfer to a matter that allows it to change its form by gathering or absorbing an amount of heat that could change is form either its from solid to liquid, liquid to gas or vice versa. 
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A fog over a lake. what two changes of state must occur to produce the fog? do the water molecules absorb or release energy duri
Zolol [24]
The water from the lake must first evaporate from the liquid state to the gaseous state and then condense in the air to form vapors.
The water molecules absorb energy while evaporating and release it when condensing. Their motion gets faster when they are evaporating and slows back down upon condensation.
3 0
3 years ago
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Write five characteristics of good government?​
Oduvanchick [21]

Explanation:

giving equal opportunity,making good governance, maintaining peace and harmony among people, other try to write by your self

5 0
3 years ago
Is there a difference between a homogeneous mixture of hydrogen and oxygen in a 2:1 ratio and a sample of water vapor?
Feliz [49]

Answer:

Yes

Explanation:

There is a difference between the homogeneous mixture of the hydrogen and the oxygen in a 2:1 ratio and the sample of the water vapor.

In the homogeneous mixture of the hydrogen and the oxygen which are present in the ratio, 2:1 , the elements are not chemically combined. They are explosive also as both shows their specific properties. They can be separated by physical means (Condensation, diffusion).

On the other hand, in water vapor, the two elements are chemically bonded in a specific mixture which cannot be separated via physical means. Water has its unique properties and they can be separated by chemical means only.

5 0
3 years ago
1. In the models, what particles do the colored and plain sesame seeds represent? What particles do the poppy seeds represent
Veronika [31]
Ok the answers to the hole .doc is 
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6 0
3 years ago
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A gas of 3.4 moles occupies a volume of 0.046 L at 298 K. What is the pressure in kPa?
Phantasy [73]

Answer : The correct option is, 2.1\times 10^5kPa

Explanation :

To calculate the pressure of gas we are using ideal gas equation as:

PV=nRT

where,

P = pressure of gas = ?

V = volume of gas = 0.046 L

n = number of moles of gas = 3.4

R = gas constant = 8.314 L.kPa/mol.K

T = temperature of gas = 298 K

Now put all the given values in the above formula, we get:

P\times (0.046L)=(3.4mol)\times (8.314L.kPa/mol.K)\times (298K)

P=1.83\times 10^5kPa\approx 2.1\times 10^5kPa

Therefore, the pressure of gas is, 2.1\times 10^5kPa

3 0
3 years ago
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