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Rzqust [24]
3 years ago
11

The alkanes are a homologous series of compounds containing only carbon and hydrogen that have the general formula

ps://tex.z-dn.net/?f=C_nH_%7B2n%2B2%7D" id="TexFormula1" title="C_nH_{2n+2}" alt="C_nH_{2n+2}" align="absmiddle" class="latex-formula">. Members of this series include butane (C₄H₁₀), 3,3-dimethylpentane (C₇H₁₆), hexane (C₆H₁₄), and heptane (C₇H₁₆).
The boiling points for a set of compounds in a homologous series can be qualitatively predicted using intermolecular force strengths. Using their condensed structural formulas, rank the homologous series for a set of alkanes by their boiling point.
Chemistry
1 answer:
AnnZ [28]3 years ago
8 0

Answer:

Heptane > hexane> 3,3-dimethylpentane > butane

Explanation:

All things being equal, it is expected that the boiling point of the members of the alkane homologous series increase as we move down the group.

Hence for example, butane is expected to have a higher boiling point than ethane. Another important factor we would be considering in this answer is the presence of a branched alkane amongst the answers in the question. A straight-chain alkane will have a boiling point which is higher than that of a branched-chain alkane due to the greater surface area in contact, thus the greater van der Waals forces, between adjacent molecules

Now if we are to rank the compounds on the basis of boiling point, the answer is as follows:

Heptane > hexane > 3,3-dimethylpentane> butane

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Does dilution reduce the amount of conductivity?
lukranit [14]

Answer:

yes

Explanation:

dilution can reduce the amount of conductivity

4 0
3 years ago
Using the chemical equation in Question 1 above, if 42.6 g of H2 reacts in excess nitrogen gas and the actual yield of NH3 was 2
S_A_V [24]

Answer:

The answer to your question is:  82.9 %

Explanation:

Data

H2 = 42.6 g

NH3 = 200 g

percent yield = ?

Reaction

                  3H2   +   N2   ⇒       2NH3

Process

                 6 g of H ---------------   34 g of N

                42.6 g     -------------      x

                 x = 241.4 g of NH3

percent yield = 200 / 241.4 x 100

                     = 82.9 %          

8 0
3 years ago
Read 2 more answers
What is the difference between inferring and predicting
attashe74 [19]

‘Inference’ is a noun and its meaning is the act or process of reaching a conclusion about something from known facts or evidence. An ‘inference’ can be a verbal statement, but more commonly it refers to a thought process. For example: It seems like a reasonable inference that it is cold outside, because everyone I see is wearing a coat. An inference is usually made about something with a degree of certainty, based on facts like statistics, calculations, observations or generalizations. ‘Infer’ is the verb form of ‘inference’, having the same meaning, to form an opinion or reach a conclusion based on known facts. For example: We can infer that it is cold outside based on what we see people wearing. Synonyms include words like ‘surmise’, ‘deduce’, ‘reason’ and ‘conclude’.

‘Prediction’ is also a noun. It means a statement about what will or might happen in the future. A ‘prediction’ generally is a verbal statement, but it can mean just a mental thought. For example: I made a prediction that it will snow tomorrow. There is also a commonly used verb form of ‘prediction’, ‘predict’. ‘To predict’ means to say that something might or definitely will happen in the future. For example: I predict it will snow tomorrow. While ‘prediction’ and ‘predict’ are usually based on some sort of fact, observation, experience or scientific reason, these meaning behind these words does not have definite certainty of occurring. Something that someone predicts may or may not actually happen. A good example of an everyday prediction is the weather forecast. What is forecasted, or predicted, is based on scientific evidence, but it is not a known certainty, just a <span>probability.</span> 

3 0
3 years ago
What are the standard temperature and pressure conditions enthalpy is usually measured under?
oksian1 [2.3K]

The standard temperature and pressure conditions enthalpy is usually measured under are 1kPa and 273K (option A).

<h3>What is enthalpy?</h3>

Enthalpy in thermodynamics is a measure of the heat content of a chemical or physical system.

Enthalpy is the sum of the internal energy and pressure times volume It can be calculated using the following formula:

H = E + P V

Where;

H = Enthalpy

E = internal energy

P = pressure

V = volume

However, the enthalpy of a substance is usually measured under standard temperature and pressure.

  • The standard temperature is 273 Kelvin or K
  • The standard pressure is 1kPa

Learn more about enthalpy at: brainly.com/question/13996238

#SPJ1

8 0
2 years ago
True or false: Observing a physical property of a substance will change the substances' identity I NEEED HELLLPPPPP NOOOWWWW !!!
andrew11 [14]

Answer:

false

Explanation:

a physical property can be observed and stay the same but a chemical property can't

8 0
4 years ago
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