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Leya [2.2K]
3 years ago
7

Identify the atomic orbitals in the C-C sigma bond in ethyne (acetylene HC-triplebond-CH)

Chemistry
1 answer:
aleksley [76]3 years ago
8 0

Answer:

Explanation:

A sigma bond is formed  when a hybrid orbital sp overlaps with another hybrid orbital or with s- or  p- orbital

Ethylene has a structural formula of  H - C≡ C- H

At the ground state; we have :

C    | ⇅ |     |↑ | ↑

        2s       2p

At the excited state, we have:

C    | ↑ |     |↑ | ↑ | ↑

the hybrid orbital

C = | ↑ | ↑ |

      2sp

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A certain amount of hydrogen peroxide was dissolved in 100. mL of water and then titrated with 1.68 M KMnO4. What mass of H2O2 w
Stels [109]

Answer:

see explanation below

Explanation:

First to all, this is a redox reaction, and the reaction taking place is the following:

2KMnO4 + 3H2SO4 + 5H2O2 -----> 2MnSO4 + K2SO4 + 8H2O + 5O2

According to this reaction, we can see that the mole ratio between the peroxide and the permangante is 5:2. Therefore, if the titration required 21.3 mL to reach the equivalence point, then, the moles would be:

MhVh = MpVp

h would be the hydrogen peroxide, and p the permanganate.

But like it was stated before, the mole ratio is 5:2 so:

5MhVh = 2MpVp

Replacing moles:

5nh = 2MpVp

Now, we just have to replace the given data:

nh = 2MpVp/5

nh = 2 * 1.68 * 0.0213 / 5

nh = 0.0143 moles

Now to get the mass, we just need the molecular mass of the peroxide:

MM = 2*1 + 2*16 = 34 g/mol

Finally the mass:

m = 0.0143 * 34

m = 0.4862 g

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3 years ago
What type of reaction occurs between aqueous ammonia solution and an acid?
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B.) Barometer

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3 years ago
A train travels at a speed of 30 miles per hour. If 1 mile = 1.6 kilometers, how fast is the train traveling in kilometers per m
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The answer 
 the speed of <span>the train traveling in kilometers per minute can be found by using the following method:
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just do the calculus by changing miles to kilometers
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v=30 miles / hour = 48km / h = 48km / 60 mn  = 0.8 km/ mn
the answer is
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