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s2008m [1.1K]
2 years ago
10

What is the number of valence electrons in a calcium atom? * 8 2 18 20​

Chemistry
1 answer:
hoa [83]2 years ago
4 0

Answer:

2

Explanation:

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What is the cause of acid precipitation?
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A steel tank contains carbon dioxide at a pressure of 13.0 atm when the temperature is 34oC. What will be the internal gas press
morpeh [17]

Answer:

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Explanation:

Given parameters:

Initial pressure = 13atm

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Unknown:

Final pressure  = ?

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