Question 18(Multiple Choice Worth 5 points)
1 answer:
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Answer:
The balanced equations for the reactions are outlined below:
Explanation:
A balanced equation describes how many (number of moles) atoms of the reactant give rise to how many (number of moles) of product.
- Hydrogen sulfide gas (
) and oxygen gas (
) react to produce sulfur dioxide gas (
) and water vapor gas.
- The balanced equation for the reaction, taking into consideration the states is:
→
Vanadium(II) oxide (VO) is oxidized by iron(III) oxide (Fe2O3) resulting in the formation of vanadium(V) oxide (V2O5) and iron(II) oxide (FeO).
The balanced equation:
→
Answer: The mass percent of carbon in acetylene is 92.31 %.
Explanation:
In , there are 2 carbon atoms and 2 hydrogen atoms.
To calculate the mass percent of element in a given compound, we use the formula:
Mass of carbon =
Mass of acetylene =
Putting values in above equation, we get:-
Hence, the mass percent of carbon in acetylene is 92.31 %.