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4 years ago

Which of these is an oxidation half-reaction?

Chemistry

1 answer:

Zepler [3.9K]4 years ago

6 0

Answer:

E= mc sqared

Explanation:

;) lol

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A 115.0-g sample of oxygen was produced by heating 400.0 g of potassium chlorate.2KClO3 Right arrow. 2KCI + 3O2What is the perce

STALIN [3.7K]

Answer:

73.4% is the percent yield

Explanation:

2KClO₃ → 2KCl + 3O₂

This is a decomposition reaction, where 2 moles of potassium chlorate decompose to 2 moles of potassium chloride and 3 moles of oxygen.

We determine the moles of salt: 400 g . 1. mol /122.5g= 3.26 moles of KClO₃

In the theoretical yield of the reaction we say:

2 moles of potassium chlorate can produce 3 moles of oxygen

Therefore, 3.26 moles of salt, may produce (3.26 . 3) /2 = 4.89 moles of O₂

The mass of produced oxygen is: 4.89 mol . 32 g /1mol = 156.6g

But, we have produced 115 g. Let's determine the percent yield of reaction

Percent yield = (Produced yield/Theoretical yield) . 100

(115g / 156.6g) . 100 = 73.4 %

5 0

3 years ago

Which of the following is found in both a cell and a virus?

zloy xaker [14]

I dont know maybe b

5 0

3 years ago

What is science?

nikdorinn [45]

A body of knowledge and a process of gaining that knowledge

4 0

3 years ago

If a gas is compressed from 4 L to 1 L and the temperature remains constant, what happens to the pressure?

Luba_88 [7]

If T=const
P1V1=P2V2
P1*4L=P2*1L
P2=4P1
pressure increases by factor of 4

4 0

3 years ago

Read 2 more answers

Draw the other possible resonance structure of each organic ion. In each case, draw the structure that minimizes formal charges.

pshichka [43]

Three resonance structures can be drawn for the allyl cation while two resonance structures can be drawn for the amidate ion.

Sometimes, we cannot fully describe the bonding in a chemical specie using a single chemical structure. In such cases, we have to use a number of structures which cooperatively represent the actual bonding in the molecule. These structures are called resonance or canonical structures.

The resonance structures of the allyl cation and the amidate ion are shown in the images attached to this answer. These structures show the different bonding extremes in these organic ions.

Learn more: brainly.com/question/4933048

7 0

3 years ago