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Masteriza [31]
2 years ago
7

If rust is scraped off a nail, and the nail is shiny on the inside, the inside wasA.chemically changed also.B.not chemically cha

nged.C.physically and chemically changed.D.neither physically nor chemically changed.
Chemistry
1 answer:
aliya0001 [1]2 years ago
3 0

Answer: D.neither physically nor chemically changed.

Explanation:

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.

Example: Melting of ice

A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.

Example: Corrosion of iron

As the inside of the nail was still shiny and in same phase, that means it has not undergone any physical or chemical change.

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(PLEASE HELP DUE TODAY!) A gas has a volume of 1000.0 mL at a temperature of 20.OK and a pressure of 1.0 atm. What will be the n
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Answer:

4 L or 4000 mL

Explanation:

This question asks for the use of combined gas law:

(P1)(V1) / (T1) = (P2)(V2) / (T2)

...where pressure (P) is in atm, volume (V) is in liters, and temperature (T) is in kelvin.

1000 ml is 1 L, and everything else is already in the right units.

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7 0
2 years ago
Name five solvents available to the organic chemistry for use in the purification of organic compounds.
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Explanation:

The solvent is a base or medium , in which reaction takes place ,

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The example of organic solvents , used in laboratory are as follows -

 

1. Toluene

2. Hexane

3. Pentane

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5. Methanol

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Explanation:

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