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Ugo [173]
1 year ago
9

Phase changes lab, please! I need help fast deadline is really close.

Chemistry
1 answer:
Lapatulllka [165]1 year ago
5 0

Phase change occur in substances when the they change from one state of matter to another due to the addition or removal of heat.

<h3>What are phase changes?</h3>

Phase changes refers to the changes that occur in substances in which they change from one state of matter to another due to the addition or removal of heat.

The phase changes that occur in substances are as follows:

  • change from solid to liquid known as melting
  • change from liquid to gas known as vaporization
  • change from solid to gas known as sublimation
  • change from gas to solid known as deposition
  • change from gas to liquid known as condensation
  • change from liquid to solid known as freezing

Therefore, phase change occur in substances when the they change from one state of matter to another due to the addition or removal of heat.

Learn more about phase change at: brainly.com/question/13067020

#SPJ1

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9. To become like a noble gas the element P will have a charge of
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How are an atoms chemical properties determined?
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A sample with a molar mass of 34.00 g/mol is found to consist of 5.9783% Hydrogen and 94.0217% oxygen. Find it’s molecular formu
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Answer:

The formula is H202 (hydrogen peroxide, known as hydrogen peroxide)

Explanation:

100%----34g

5, 9783%---X= (5, 9783%x 34g)/100% =2 g

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2g----x= 2g x 1 atom of H/1g = 2 atom of H

100%----34g

94, 0217%---X= (94,0217%x 34g)/100% =32 g

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5 0
2 years ago
2)
vodomira [7]

Answer:

Final volume 30.513 L.

Explanation:

According to general gas equation:

P₁V₁/T₁ = P₂V₂/T₂

Given data:

Initial volume = 17 L

Initial pressure = 2.3 atm

Initial temperature = 299 K

Final temperature = 350 K

Final volume = ?

Final pressure = 1.5 atm

Solution:

P₁V₁/T₁ = P₂V₂/T₂

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 2.3 atm × 17 L × 350 K / 299 K × 1.5 atm

V₂  =  13685 atm .L.  K  / 448.5 K . atm

V₂  = 30.513 L

6 0
2 years ago
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