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3 years ago

Explain why the catalyst is used as a very fine powder and larger pieces of iron are not used.

Chemistry

1 answer:

Allushta [10]3 years ago

7 0

Answer:

<h2><u>Reason:</u></h2>

Catalyst is used as a very fine powder and larger pieces of iron are not used. This is because the surface area of catalyst needs to be large so that more of the surface is exposed to the substrate and more of the substrate is catalyzed.

<h2><u>Important Info:</u></h2>

=> Larger Pieces of Iron has a smaller surface area than the fine particles.

=> Larger the surface area of catalysts/enzymes , more will be the reaction rate and vice versa.

Hope this helped!

<h2>~AnonymousHelper1807</h2>

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Which is the correct Lewis dot structure of NH2?

Svetlanka [38]

Answer:

OE. E

Explanation:

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3 years ago

An excess of oxygen reacts with 451.4 g of lead, forming 374.7 g of lead(II) oxide. Calculate the percent yield of the reaction.

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Answer: The percent yield of the reaction is 77.0 %

Explanation:

$2Pb+O_2\rightarrow 2PbO$

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

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According to stoichiometry:

2 moles of $Pb$ produces = 2 moles of $PbO_2$

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3 0

3 years ago

Multiple choice

mihalych1998 [28]

Answer:

S + 4 Cl2

Explanation:

Sulphur - S

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S + 2Cl2

Incorrect option

S + Cl2

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Argon has three naturally occurring isotopes: argon-36, argon-38, and argon-40. Based on argon's reported atomic mass, which iso

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Read 2 more answers

Ammonia chemically reacts with oxygen gas to produce nitric oxide and water . What mass of ammonia is consumed by the reaction o

prohojiy [21]

The chemical equation represents the reaction describes is;
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Therefore 4 moles of NH3 reacts with 5 moles of O2.
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4 moles of NH3 = 4 (14 + 3*1) = 68g

Therefore, 68g of NH3 reacts with 160g of O2.
But, we have only 4.5 g of oxygen.
68g reacts with 160g
Xg reacts with 4.5
X = 68*4.5 / 160 = 1.9125g

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