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Bingel [31]
2 years ago
15

An element, X, has 2 electron shells and 5 of the electrons are valence electrons. The atomic number of element X would be:

Chemistry
1 answer:
lidiya [134]2 years ago
7 0

Answer:

5th period

Explanation:

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Suppose that 2.14 grams of H2SO4 is mixed with enough water to make 225 mL of solution. Determine the Molarity (M) of the soluti
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Answer:

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Explanation:

Remember this equation:

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What will happen if you add more dilute to a saturated solution
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3 years ago
An investigation is conducted into how the mass of magnesium metal reacting with hydrochloric acid affects the amount of hydroge
natta225 [31]

An investigation is conducted into how the mass of magnesium metal reacting with hydrochloric acid affects the amount of hydrogen gas produced.

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Answer:

A) what is the independent variable:

B) what is the dependent variable:

C) write a hypothesis for this investigation:

D) give 2 variables that should have been controlled for this investigation:

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