2 years ago

When involved in a chemical reaction with a metal, what charge will elements in the oxygen family most likely form?

1 answer:

6 0

They have 6 electron in their outer orbital. That means they want 2 electrons to be stable. Since metals have the tendency to give electron oxygen receives 2 electrons. The answer is -2

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2 years ago

What is the empirical formula of the compound that is 25.3% magnesium and 74.7% chlorine

Margarita [4]

Answer: $MgCl_2$

Explanation:

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74.7% Cl

First step: change % to g

25.3g Mg

74.7g Cl

Second step: calculate g/mol of each compound. You can do this by using the atomic mass.

$25.3gMg(\frac{1mol}{24.30g})=1.04mol$

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Third step: determine the lowest number and divide everything by it. Of the result, extract whole number only.

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Fourth step: Write each compound with their respective number below.

This empirical formula should be: $MgCl_2$

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