3 years ago

Which number indicates the energy level of an atoms valence electrons

Chemistry

1 answer:

Arisa [49]3 years ago

8 0

Period number
Hope this helps!!

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nydimaria [60]

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Explanation:

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3 years ago

NaCl has a mc020-1.jpgHfus = 30.2 kJ/mol. What is the mass of a sample of NaCl that needs 732.6 kJ of heat to melt completely?

lilavasa [31]

Answer: The mass of the sample will be 1417.7 grams.

Explanation:

We are given:

$\Delta H_{fusion}=30.2kJ/mol$