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kiruha [24]
2 years ago
9

Someone help me please i’ll give brainly

Chemistry
1 answer:
drek231 [11]2 years ago
7 0
<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2>

\huge\boxed{Sublimation}

<h2>_____________________________________</h2><h2>Sublimation:</h2>

Sublimation is a process in which the solid molecules gain energy from their surrounding and they now have enough energy to overcome the force of attraction with the neighboring molecules, thus they escape into the surrounding without going through the liquid phase, that means they directly jump to the vapor phase.

<h2>_____________________________________</h2><h2>Endothermic</h2>

Those process which absorb energy from their surrounding to form the product are called endothermic process. Since the SUBLIMATION requires additional energy, it is an endothermic change.

<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2><h2 />
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Which statements below are an appropriate hypothesis in response to this question? Check all that apply. If a substance changes
Nostrana [21]

Answer:

If a substance undergoes a physical change, then it will retain most of its original properties because no new substance is formed.

If a substance undergoes a chemical change, then it will not retain its original properties because a new substance is formed.

Explanation:

So in shorter words its options 2 and 3

6 0
3 years ago
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If there is a graduated cylinder containing 20mL of water and a small rock is gently placed inside it, and the water level insid
LekaFEV [45]

Answer:

5

Explanation:

just subtract 20-25 and 5 is left over which is how much the water when up with the rock.

8 0
3 years ago
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The density of ethanol is 0.789 g/cm^3 at 20 degrees C. What volume of ethanol has a mass of 15.5 grams?
lys-0071 [83]
<span>density = mass / volume
   
given the quotient , we have density and mass, volume can be easily calculated as:
   
volume = mass / p =15.5 g / 0.789 g/cm^3
   
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6 0
3 years ago
Conceptos de agentes químicos
iogann1982 [59]
If you need to translate, the answer is
Chemical agents concept
6 0
3 years ago
Which of the following liquids would have the highest viscosity at room temperature?
Liono4ka [1.6K]

Answer:

5)HOCH2CH2OH

Explanation:

This is also known as ethylene glycol. An increase in hydrogen bonds of a compound means an increase in the viscosity. Hydrogen bonds occur as a result of bonding with electronegative elements such as Oxygen, Nitrogen etc.

The compounds with the highest amount of Hydrogen bond represents the one with the highest viscosity which is B) HOCH2CH2OH

3 0
3 years ago
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