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astraxan [27]
2 years ago
15

Define valence electrons.

Chemistry
1 answer:
vodka [1.7K]2 years ago
8 0

Answer:

Electrons on the outermost shell of an atom. They are responsible for the chemical properties of an atom.

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How many grams of KNO3 would recrystallize from 100 g of water, if a saturated solution were cooled from 50 degrees celcius to 2
Lelechka [254]

Answer:

m_{cryst}=58g

Explanation:

Hello there!

In this case, according to the attached solubility chart, it is possible for us to realize that about 88 grams of KNO3 are soluble at 50 °C but just 30 grams are soluble at 20 °C in the same 100 g of water.

In such a way, the crystalized mass of this solute can be calculated by subtracting the mass at 50 °C and the mass at 20 °C:

m_{cryst}=88g-30g\\\\m_{cryst}=58g

Best regards!

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A. 2

hope this helps :)

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What is conductivity?
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