3 years ago

( I’ll give first person who answers brainliest )

2 answers:

3 0

>Electrons move in circular orbits around the nucleus. Electrons are held in an atom by their attraction to each other. Electrons are evenly distributed throughout a mixture of positive and neutral particles.<

likoan [24]3 years ago

3 0

A.) Electrons move in circular orbits round the nucleus

Hope this helps! :)

(This may be wrong, sorry if I am)

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What is the percent composition by mass of sulfur in the compound mgso4

Margaret [11]

Answer:

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

Explanation:

Molar mass of compound = 120 g/mol

Number of sulfur atom = 1

Atomic mass of sulfur = 32 g/mol

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$=\frac{\text{Number of atoms}\times \text{Atomic mass}}{\text{molar mas of compound}}\times 100$

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$=\frac{1\times 32 g/mol}{120 g/mol}\times 100=26.7\%$

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

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irinina [24]

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