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3 years ago

How many electrons does a magnesium atom lose when it reacts with an oxygen atom?

Chemistry

1 answer:

torisob [31]3 years ago

6 0

Answer:

The answer to your question is: B. 2

Explanation:

Magnesium is located in group IIA, that means that it has 2 electrons in its outermost shell, and these are the electrons that it can lose to become stable.

Oxygen is located in group VI A, that means that it has 6 electrons in its outermost shell and needs to electrons to become stable.

Mg⁺² + O₂²⁻ ⇒ MgO

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Should the density of a metal depend on its volume?

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Answer:

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Explanation:

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3 years ago

ΚΕ:<br> m.22<br> 2<br> What is the kinetic energy of 10kg dog running with a velocity of 12m/s?

BigorU [14]

Answer:

The answer is

<h2>720 Joules</h2>

Explanation:

The kinetic energy of a body can be found by using the formula

where

m is the mass

v is the velocity / speed

From the question

mass = 10 kg

velocity = 12 m/s

Substitute the values into the above formula and solve

That's

<h3> $KE = \frac{1}{2} \times 10 \times {12}^{2} \\ = 5 \times 144 \: \:$ </h3>

We have the final answer as

<h3>720 Joules</h3>

Hope this helps you

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3 years ago