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3 years ago

PLEASE HELP!!!

Chemistry

2 answers:

hammer [34]3 years ago

8 0

B. Magnesium + Hydrogen Sulfide (Reactors) ----> Magnesium Sulfide + Hydrogen (Products)

kotykmax [81]3 years ago

8 0

Answer:

B. Mg + $H_{2}S$ ⇒ MgS + $H_{2}$

Explanation:

There are several types of chemical reactions depending on the reaction mechanisms: combination, single-displacement, double-displacement, combustion, decomposition, combustion and redox reactions.

In this case we have a single-displacement reaction, which means that a new chemical species (Mg) replaces other (H) in a given chemical compound ( $H_{2}S$ ). It happens because the electronegativity of H (a nonmetal) is greater than the Mg electronegativity. Thus H attracts the electrons strongly.

That's why there is a transference of electrons from Mg to $H^{+}$ . We can say that Mg reduces $H^{+}$ .

Once $H^{+}$ is reduced to H, a covalent bond is formed between two hydrogen atoms, and then $H_{2}$ is released as a gas.

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3 years ago

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Answer:

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Explanation:

helps?

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2 years ago

If you are trying to pipet an unknown liquid with a pipetman and the liquid keeps running out of the tip before you can transfer

irina1246 [14]

Answer:

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Explanation:

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3 years ago

Which of the following statements are true? Select all that apply.

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Explanation:

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2 years ago

To three significant figures, the measurement 1246 g should be reported as [number] g.

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Answer:

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Explanation:

The measurement 1246g shows four figures. To show this measurement to three signficant figures you must change the last digit to 0 and round properly.

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2 years ago