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3 years ago

What is the percent by mass of oxygen fe2o3 (formula mass= 160)?

Chemistry

1 answer:

GarryVolchara [31]3 years ago

5 0

30% should be the percentage of oxygen if the total mass of fe2o3 is 160.

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Hellllppppp lons Worksheet

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The metals will lose electrons while the non metals will gain electrons in order to attain octet structure.

An ion can be cation (positively charged) or anion (negatively charged).

Cations attain octet structure (8) by losing electron(s) while anions become stable or attains octet structure (8) by gaining electron(s).

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O ------------ 6 ---------------------- 2 ------------------------ none -------------- $O^{2-}$

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S ------------ 6 ----------------------- 2 ------------------------ none --------------- $S^{2-}$

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Learn more here: brainly.com/question/21089350

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3 years ago

A fixed amount of oxygen gas is held in a .500 L tank at a pressure of 4.39 atm. The tank is connected to an empty 1.50 L tank b

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Answer:

1.0975 atm.

Explanation:

According to Boyle’s Law: " At constant temperature , the volume of a given quantity of a gas varies inversely with its pressure".

P α 1/V.

∴ P₁V₁ = P₂V₂.

P₁ = 4.39 atm, V₁ = 0.5 L.

P₂ = ??? atm, V₂ = 2.0 L.

∴ P₂ = P₁V₁/V₂ = (4.39 atm)(0.5 L) / (2.0 L) = 1.0975 atm.

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3 years ago