Which is TRUE of the products in this combustion reaction? 4Fe + 3O2 2Fe2O3

2 answers:

7 0

The only true answer is A.

products are on the right side of the reaction

products and reactants don't necessarily have same physical or chemical properties

It is the reactants that are the atoms, molecules, or compounds that participate in the reaction.

mote1985 [20]3 years ago

6 0

A. The products contain 4 iron atoms and 6 oxygen atoms. is the correct answer

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Emma strikes a match and sets some logs on fire. As the fire burns, which two forms of energy are released?

Ivanshal [37]

Answer:

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7 0

2 years ago

What mass of CO is needed to react completely with55.0 g of Fe2O3(s)+CO(g) yield Fe(s)+CO2(g)?

Katarina [22]

Answer:

28.9 g

Explanation:

We know that we will need a balanced equation with masses, moles, and molar masses of the compounds involved.

Gather all the information in one place with molar masses above the formulas and masses below them.

$M_{r}$ : 159.69 28.01

Fe₂O₃ + 3CO ⟶ 2Fe + 3CO₂

Mass/g: 55.0

1. Use the molar mass of Fe₂O₃ to calculate the moles of Fe₂O₃.

$\text{Moles of Fe$_{2}$O$_{3}$} =\text{55.0 g Fe$_{2}$O$_{3}$} \times \frac{\text{1 mol Fe$_{2}$O$_{3}$}}{\text{159.69 g Fe$_{2}$O$_{3}$}}= \text{0.3444 mol Fe$_{2}$O$_{3}$}$