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KIM [24]
3 years ago
15

Which statement about scientific consensus is true?

Chemistry
2 answers:
Tanzania [10]3 years ago
6 0

Answer: Option (a) is correct

Explanation:

In a particular field of study, the collective opinion, judgement or outlook of a number of scientists or people is known as scientific consensus.

Therefore, the statement it represents the beliefs of most scientists is true about scientific consensus.

Scientific consensus is not the only way to prove a theory or law as it is only the collective judgement about a particular study. There might be other ways to prove the study. Hence, option (b) is not correct.

This collective judgement is not necessary to prove that a theory is true as there are number of theories on which there is no collective judgement of scientists. Hence, option (c) is not correct.

The interpretations are verified by going through the information provided. Hence, it is not necessary that scientific consensus is an assurance that the interpretations of a study are correct. Therefore, Hence, option (d) is not correct.

A research is the outcome of several experiments done by a scientist or a group of scientists that is not the collective judgement of number of scientists.  Hence, option (e) is not correct.

Thus, it can be concluded that option (a) is correct that is the statement that scientific consensus represents the beliefs of most scientists.

Sloan [31]3 years ago
4 0

Answer:

A.  

It represents the beliefs of most scientists.

<em><u>B.  </u></em>

<em><u>It is the only way to prove a theory true. </u></em>

C.  

It is necessary to form a hypothesis.

D.  

It is an assurance that the interpretations of a study are correct.

E.  

It is necessary before research can be published in a science journal.

Explanation:

#platofam

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sasho [114]

1.302  moles of carbon dioxide would have to be added

<h3>Further explanation</h3>

The equilibrium constant is the value of the product in the equilibrium state of the substance in the right (product) divided by the substance in the left (reactant) with the exponents of each reaction coefficient

The equilibrium constant is based on the concentration (Kc) in a reaction

pA + qB -----> mC + nD

\large {\boxed {\bold {Kc ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}

While the equilibrium constant is based on partial pressure

\large {\boxed {\bold {Kp ~ = ~ \frac {[pC] ^ m [pD] ^ n} {[pA] ^ p [pB] ^ q}}}}

The value of Kp and Kc can be linked to the formula '

\large {\boxed {\bold {Kp ~ = ~ Kc. (R.T) ^ {\Delta n}}}}

R = gas constant = 0.0821 L.atm / mol.K

=n = number of product coefficients-number of reactant coefficients

An equilibrium mixture: 0.750 moles of CO2 and H2, and 0.200 moles of CO and H2O

  • We determine Kc (constant concentration)

\displaystyle Kc=\frac{0.75.0.75}{0.2.0.2}\\\\Kc=14.1

  • the amount of carbon monoxide to 0.300 mol

Reaction :

                CO +H₂O ⇔ CO₂ + H₂

initially      0.2   0.2       0.75+x  0.75

reaction    0.1    0.1        0.1         0.1

product     0.3   0.3       0.65+x    0.65

\displaystyle Kc=\frac{(0.650+x)(0.65)}{0.3.0.3}\\\\14.1(0.09)=0.4225+0.65x\\\\1.269-0.4225=0.65x\\\\0.8465=0.65x\\\\x=1.302

<h3>Learn more</h3>

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Keywords: constant equilibrium, Kc, concentration, product, reactant, reaction coefficient

3 0
4 years ago
Read 2 more answers
Explain why lithium fluoride is a solid at room temperature
SashulF [63]
Lithium fluoride is a solid at room temperature because it is a salt that is held together by ionic bonds. Lithium. fluoride has a giant ionic structure.
8 0
3 years ago
A gas with a volume of 4.0L at a pressure of 205kPa is allowed to expand to a volume of 12.0L. What is the pressure in the conta
mr Goodwill [35]

Answer:

68.3 kilo Pascal is the pressure in the container.

Explanation:

To calculate the new pressure , we use the equation given by Boyle's law. This law states that pressure is inversely proportional to the volume of the gas at constant temperature.

The equation given by this law is:

P_1V_1=P_2V_2

where,

P_1\text{ and }V_1 are initial pressure and volume.

P_2\text{ and }V_2 are final pressure and volume.

We are given:

P_1=205kPa\\V_1=4.0 L\\P_2=?\\V_2=12.0 L

Putting values in above equation, we get:

P_2=\frac{P_1V_1}{V_2}

=\frac{205 kPa\times 4.0 L}{12.0 L}=68.3 kPa

68.3 kilo Pascal is the pressure in the container.

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What is the correct formula for the product represented by the letter x
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Then I would guess the answer is D because Na2OH is much more common and stable than Na2O is <span />
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Would you expect the carbonyl carbon of benzaldehyde to be more or less electrophilic than that of acetaldehyde? Explain using r
Slav-nsk [51]

Answer:

Benzaldehyde is less electrophilic than acetaldehyde

Explanation:

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In benzaldehyde, phenyl group can act as an electron donating group towards carbonyl group due to it's electron donating resonating effect.

In acetaldehyde, methyl group can act as an electron donating group towards carbonyl group due to it's electron donating inductive effect.

We know that resonating effect are more stronger than inductive effect.

Henece, it is expected that positive charge density on carbonyl carbon is much lower in benzaldehyde than acetaldehyde.

So, benzaldehyde is less electrophilic than acetaldehyde.

Resonating effect of phenyl group has been shown below.

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3 years ago
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