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Blababa [14]
3 years ago
14

Who proposed the "Law of Octaves" for organizing events?

Chemistry
1 answer:
djyliett [7]3 years ago
5 0

b

Explanation:

February 7, 1863, was the day John Newlands published a paper outlining what would be known as “The Law of Octaves”. Newlands discovered if he ordered the known elements by increasing atomic weight, the chemical properties of the elements would be similar for every eighth group

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Explain in your own words the interplay of temperature (heat) and intermolecular forces and the effect of these two variables on
DochEvi [55]

The forces between particles are called intermolecular forces. A strong intermolecular force means that the particles are tightly paced and is associated with the solid phase. Moderate intermolecular force is associated with the liquid state and little to no intermolecular force is associated with the gaseous state. Temperature has a direct effect on the state of matter in which the substance exists has. Generally speaking, a rise in tempreature changes a substance from the solid to liquid phase and from liquid to gaseus phase. The reverse is true, if the temperature lowers then the substance will go from gas to liquid and liquid to solid. It is important to not that temperature affects intermolecular forces. As the temperature increases then the individual particles become excited and gain enough energy to over the intermolecular forces and so the particles seperate from each other.

7 0
1 year ago
Propane burns in air to produce carbon dioxide and water?
Elan Coil [88]
Hey there!
Great question=)

Yes, this statement is true! Propane burns in air and it produces carbon dioxide and water.

I hope this helps;)
6 0
3 years ago
A 32.0-g sample of HF is dissolved in water to give 2.0 × 102 mL of solution. The concentration of the solution is:
guajiro [1.7K]

 The concentration of the  solution is  8 M


 <u><em>calculation</em></u>

<em>  </em>Concentrati<em>on   =  moles/volume  in liters</em>

<em>  </em><em>step 1: find moles of HF</em>

<em>moles  of HF  =mass/molar mass</em>

<em>molar mass of  HF =  1+  19 )= 20 g/mol</em>

<em> moles is  therefore = 32.0  g/ 20 g/mol= 1.6  moles</em>

<em>Step 2:  convert  ml to L</em>

<em>volume in liters = 2.0 x 10^2 / 1000 =0.2 l</em>

<em>step 3: find the concentration</em>

<em>concentration  =  1.6 mol  / 0.2 l = </em><em>8 M</em>

4 0
3 years ago
In order to be identified as the element carbon an atom must have
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6 protons
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2 valence electrons 2nd shell
6 0
3 years ago
How would you describe the appearance of the substance after the phase change
PolarNik [594]

Answer:   The appearance of the substance before the phase change can be described as Melting, Vaporization, Sublimation, Condensation.

Melting:

When a substance converts from the solid to the liquid.

Vaporization:

The substance changes from a liquid to a gas.

Condensation:

When a substance converts from a gas to a liquid.

Sublimation:

When a substance converts directly from a solid to a gas without going through the liquid phase.

Therefore, the appearance of the substance before the phase change can be described as Melting, Vaporization, Sublimation, Condensation.

8 0
1 year ago
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