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kipiarov [429]
3 years ago
7

State two procedures which should be used to properly handle a light microscope

Chemistry
1 answer:
babunello [35]3 years ago
5 0

hold at base and arm

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A substance produces a solution with negative compounds when mixed with water.\
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Answer:

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Explanation:

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3 years ago
COMPARE AND CONTRAST <br> PROPANE AND HEXANE ...?
Yakvenalex [24]
In context|organic compound|lang=en terms the difference between propane and hexane is that propane<span> is (organic compound) an aliphatic hydrocarbon, c3h8, a constituent of natural gas while </span>hexane<span> is (organic compound) any of five isomeric aliphatic hydrocarbons, c6h14 they are colorless, volatile liquids. As nouns the difference between </span>propane<span> and </span>hexane<span> is that </span>propane<span> is (organic compound) an aliphatic hydrocarbon, c3h8, a constituent of natural gas while </span>hexane<span> is (organic compound) any of five isomeric aliphatic hydrocarbons, c6h14 they are colorless, volatile liquids.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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5 0
4 years ago
1) In the boxes below, draw the model given in the simulation and draw a model of the molecules in an object when the object
sladkih [1.3K]

The molecules of the cold element are going to be closer together and still than the molecules of the hot element because the heat energy causes the molecules to be stimulated and to move.

<h3>How do molecules act at different temperatures?
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In the image you can see the behavior of the molecules when they are in different environments. On the right you see the cold molecules and on the left the hot molecules that are characterized by the following characteristics:

Cold molecules:

  • Molecules together.
  • Molecules with little movement.

Hot molecules:

  • Separate molecules.
  • Molecules with active movement.

A simple example to understand this behavior of molecules is water because:

  • When water is frozen its molecules are almost static and close together.
  • When the water is liquid and it is heated, the molecules move and that is why the water has bubbles, its molecules are separated.

Learn more about molecules in: brainly.com/question/19922822

6 0
3 years ago
How many moles of tungsten (W,183.85 g/mol) are in 415 grams of tungsten?
ozzi
2.25739773716275. I used a calculator during class today to get this answer, and I am pretty sure it is right, hope it helps. 
8 0
3 years ago
Read 2 more answers
A 265-mL flask contains pure helium at a pressure of 751 torrs. A second flask with a volume of 465 mL contains pure argon at a
Nadya [2.5K]

Answer:

Total Pressure = 745.6 torr

Partial Pressure of He = 272.8 torr

Partial Pressure of Ar =  472.8 torr

Explanation:

Step 1: Data given

Volume of the flask helium = 265 mL

Pressure in the helium flask = 751 torr = 751/760 atm

Volume of the flask argon = 465 mL

Pressure in the argon flask = 727 torr = 727/760 atm

The total pressure exerted by a gaseous mixture is equal to the sum of the partial pressures of each individual component in a gas mixture.

Step 2: Calculate total volume

Total volume = 265 mL + 465 mL = 730 mL =  0.730 L

Step 3: Boyle's Law:

P1V1=P2V2

⇒ with P1 = total pressure gas exerts in its own flask

 ⇒ with V1 = volume of flask with stopcock valve closed

 ⇒ with P2 = partial pressure of gas exerts on total volume of both flasks when stopcock valve is opened  

 ⇒ with V2 = total volume of both flasks with stopcock valve opened

Helium using Boyle's Law equation from above:

P1V1=P2V2

⇒ with P1 = Pressure of helium = 751 /760 = 0.98816 atm

 ⇒ with V1 = volume of helium = 0.265 L

 ⇒ with P2 = The new partial pressure of helium

 ⇒ with V2 = total volume = 0.730 L

(0.98816 atm)(0.265L)=P2(0.730L)

P2=0.359 atm

Argon using Boyle's Law equation from above:

P1V1=P2V2

⇒ with P1 = Pressure of argon = 727/760 = 0.95658 atm

 ⇒ with V1 = volume of argon = 0.465 L

 ⇒ with P2 = The new partial pressure of argon

 ⇒ with V2 = total volume = 0.730 L

(0.95658 atm)(0.465L)=P2(0.730L)

P2=0.609 atm

Step 4: Convert pressure in atm to torr

Pressure helium = 0.359 atm = 272.8 torr

Pressure argon = 0.609 atm = 472.8 torr

Step 5: Calculate Total pressure

Ptotal = P(He)+P(Ar)

⇒ Pt  = total pressure of the gas mixture

⇒ P(He) = partial pressure of Helium

 ⇒ P(Ar)  = partial pressure of Argon

Pt = 272.8 torr + 472.8 torr

Pt = 745.6 torr

Total Pressure = 745.6 torr

Partial Pressure of He = 272.8 torr

Partial Pressure of Ar =  472.8 torr

5 0
4 years ago
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