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4 years ago

What prefix should be used to name a hydrocarbon that has a six-carbon parent chain?a.hex- b.meth- c.non- d.sept-

Chemistry

1 answer:

liberstina [14]4 years ago

8 0

A. hex- Normally with 6, the prefix is hex-. For example a polygon having 6 sides is known as hexagon.

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The combustion of ethene in the presence of excess oxygen yields carbon dioxide and water: c2h4 (g) + 3o2 (g) → 2co2 (g) + 2h2o

meriva

Answer:

$\boxed{-267.5}$

Explanation:

You can calculate the entropy change of a reaction by using the standard molar entropies of reactants and products.

The formula is

$\Delta_{r} S^{\circ} = \sum_n {nS_{\text{products}}^{\circ} - \sum_{m} {mS_{\text{reactants}}^{\circ}}}$

The equation for the reaction is

C₂H₄(g) + 3O₂(g) ⟶ 2CO₂(g) + 2H₂O(ℓ)

ΔS°/J·K⁻¹mol⁻¹ 219.5 205.0 213.6 69.9

$\Delta_{r} S^{\circ} = (2\times213.6 + 2\times69.9) - (1\times219.5 + 3\times205.0)\\\\= 567.0 - 834.5 = \boxed{-267.5 \text{ J}\cdot\text{K}^{-1} \text{mol}^{-1}}$

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3 years ago

If you refuse a legal chemical test issued by a law enforcement officer, the Division of Motor Vehicles is required to:

Andru [333]

Answer: Revoke the driver's license for at least 12 months

Explanation:

Chemical tests are used in order to measure the amount of drugs or alcohol that is in the body of a person when the person was arrested. To do this, samples of the urine or blood of the person can be taken and the result will be used to know if the person was driving under the influence of alcohol or not.

If the person refuse a legal chemical test issued by a law enforcement officer, the Division of Motor Vehicles is required to revoke the the driver's license of the person for at least 12 months.

6 0

3 years ago

I NEED HELP PLEASE !!!!!

Jobisdone [24]

Answer: My opinion is the second one because a lot of humans uses technology and technilogy replaces a lot of stuff.

Explanation:

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3 years ago

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Balance AI(NO3)3 + H2SO4 → Al2(SO4)3 + HNO3

nikklg [1K]

Answer:

2Al(NO3)3 + 3H2SO4 → Al2(SO4)3 + 6HNO3

Explanation:

i just looked up how to balance it, i dont really know how to balance it exactly

5 0

3 years ago

Which is an expression? A. 1 = 3 - 2 B. 2 + 5 = 5 + 2 C. 4+ 3 < 9 D. 26

Helga [31]

Answer:

A. 1 = 3 - 2

Explanation:

What defines an expression?

expression - An expression is a sentence with a minimum of two numbers and at least one math operation. This math operation can be addition, subtraction, multiplication, and division.

So if we look at the letter options we can see that A is the best choice.

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3 years ago

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