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Kipish [7]
3 years ago
11

Which is an example of a precipitation reaction?

Chemistry
1 answer:
netineya [11]3 years ago
6 0
B. Precipitates are formed when two solutions combine to form another solution and a solid.
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How many grams of CO are needed to react with an excess of Fe2O3 to produce (210.3 g Fe) 209.7 g Fe? Show your work.
Fed [463]

Explanation:

3CO(g)+Fe_2O_3(s)\rightarrow 2Fe(s)+3CO_2(g)

1)Mass of CO when 210.3 g of Fe produced.

Number of moles of Fe in 210.3 g=

\frac{\text{Given mass of Fe}}{\text{Molar mass of Fe}}

=\frac{210.3}{55.84 g/mol}=3.76 mol

According to reaction, 2 moles of Fe are obtained from 3 moles of CO, then 3.76 moles of Fe will be obtained from : \frac{3}{2}\times 3.76 moles of CO that is 5.64 moles.

Mass of CO in 5.64 moles =

\text{Number of moles}\times \text{molar mass of CO}=5.46\times 28 g/mol=157.92 g

2)Mass of CO when 209.7 g of Fe produced.

Number of moles of Fe in 209.7 g=

\frac{\text{Given mass of Fe}}{\text{Molar mass of Fe}}

=\frac{209.7}{55.84 g/mol}=3.75 mol

According to reaction, 2 moles of Fe are obtained from 3 moles of CO, then 3.75 moles of Fe will be obtained from : \frac{3}{2}\times 3.75 moles of CO that is 5.625 moles.

Mass of CO in 5.625 moles =

\text{Number of moles}\times \text{molar mass of CO}=5.625\times 28 g/mol=157.5 g

4 0
3 years ago
Read 2 more answers
An airplane is flying West at 200 km/h two hours later it is flying West at 300 km/h it's average acceleration is 100 km / hour2
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It's true that it's average acceleration is 100 km/ hour 2
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4 years ago
Which one of the metals reacts with dilute acids to form hydrogen?
gogolik [260]

Answer:

(B) magnesium. .........,..

8 0
3 years ago
Devise a 6‑step synthesis of the starting material from the product. The cyclopentene is a key intermediate.
Grace [21]

Cyclopentene is industrially produced in large quantities. It is used as a monomer for the synthesis of plastics, in addition to other chemical syntheses.

<h3>The 6‑step synthesis of the starting material from the product</h3>

Reaction 1 - Preparation of keto-aldehyde

Reaction 2 - Preparation of cyclopentene carbaldehyde

Reaction 3 -Preparation of α,β-epoxy-carbaldehyde cyclopentane

Reaction 4 - Preparation of cyclopentene alcohol

Reaction 5 -Preparation of α,β-epoxy-cyclopentane alcohol

Reaction 6 -Preparation of α,β-epoxy-carbaldehyde cyclopentane

With this information we can conclude that cyclopentene is used as a monomer for the synthesis of plastics.

Learn more about synthesis of plastics in brainly.com/question/13833034

7 0
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