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topjm [15]
3 years ago
9

An ideal gas may be taken from one state to another state with a different pressure, volume, and temperature along several diffe

rent paths. Quantities that will always be the same for this process, regardless of which path is taken, include which of the following? I. The change in internal energy of the gas II. The heat exchanged between the gas and its surroundings III. The work done by the gas
Chemistry
1 answer:
AVprozaik [17]3 years ago
7 0

Answer:

correct option: 1

Explanation:

As given in the question that gas are taken from one sate to another state through different paths and asking which quantity will always remains same.

1. internal energy of gas is not path dependent so internal energy will remains same it depend only on the initial and final point .

2. Heat and work are path dependent means its matter the gas is taken by which path. so option 2 and 3 are wrong.

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Answer:

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Explanation:

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A student spends 4.5 hours studying for a test. How much time is this equivalent to in seconds
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What is the mass percent of oxygen in sodium bicarbonate (NaHCO3)?
Alenkasestr [34]
The answer is 57.14%.

First we need to calculate molar mass of <span>NaHCO3. Molar mass is mass of 1 mole of a substance. It is the sum of relative atomic masses, which are masses of atoms of the elements.

Relative atomic mass of Na is 22.99 g
</span><span>Relative atomic mass of H is 1 g
</span><span>Relative atomic mass of C is 12.01 g
</span><span>Relative atomic mass of O is 16 g.
</span>
Molar mass of <span>NaHCO3 is:
22.99 g + 1 g + 12.01 g + 3 </span>· <span>16 g = 84 g

Now, mass of oxygen in </span><span>NaHCO3 is:
3 </span>· 16 g = 48 g

mass percent of oxygen in <span>NaHCO3:
48 g </span>÷ 84 g · 100% = 57.14%

Therefore, <span>the mass percent of oxygen in sodium bicarbonate is 57.14%.</span>
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In two or more complete sentences, develop a logical argument to either support or refute the following statement. Be sure to pr
Yuri [45]

We use logic every day to figure out test questions, plan our budgets, and decide who to date. We borrow from the vocabulary of logic when we say, "Brilliant deduction" or even "I don't want to argue about it." In the study of logic, however, each of these terms has a specific definition, and we must be clear on these if we are to communicate.

Vocabulary

Proposition --

T or F in an argument, but not alone. Can be a premise or conclusion. Is not equal to a sentence.

Premise --

Proposition used as evidence in an argument.

Conclusion --

Proposition used as a thesis in an argument.

Argument --

A group of propositions of which one is claimed to follow from the others.

Induction --

A process through which the premises provide some basis for the conclusion

Deduction --

A process through which the premises provide conclusive proof for the conclusion.

Argument Indicators: Premise Indicators: Conclusion Indicators:

should

must

ought  

necessarily

since  

because

for  

as

inasmuch as  

for the reason that

first ...

therefore

hence

thus

so

consequently  

it follows that  

one may infer

one may conclude

When dealing with persuasive writing, it will be helpful for you to outline the argument by premises and conclusions. By looking at the structure of the argument, it is easy to spot logical error.

Universities are full of knowledge. The freshmen bring a little in, and the seniors take none away, and knowledge accumulates.

-- Harvard President A. L. Lowell

Premise 1

Premise 2

Premise 3

Conclusion Freshmen bring a little (knowledge) in

Seniors take none away

Knowledge accumulates

Universities are full of knowledge

Example 2

(Here, the conclusion of one argument is used as a premise in another. This is very common.)

Even though there may be a deceiver of some sort, very powerful and very tricky, who bends all his efforts to keep me perpetually deceived, there can be no slightest doubt that I exist, since he deceives me; and let him deceive me as much as he will, he can never make me be nothing as long as I think I am something. Thus, after having thought well on this matter, and after examining all things with care, I must finally conclude and maintain that this proposition: I am, I exist, is necessarily true every time that I pronounce it or conceive it in my mind.

-- Rene Descartes, *Meditations*

Argument 1 Premise 1:

Conclusion of Argument 1

Argument 2 Premise 1:

Conclusion:

To be deceived ... I must exist

When I think that I exist I cannot be  

deceived about that

I am, I exist, is necessarily true ... .

Exercises

Find the Arguments and Outline them in These Statements:

1. Ask the same for me, for friends should have all things in common.

-- Plato, Phaedrus

2. Matter is activity, and therefore a body is where it acts; and because every particle of matter acts all over the universe, every body is everywhere.

-- Collingwood, The Idea of Nature

3. The citizen who so values his "independence" that he will not enroll in a political party is really forfeiting independence, because he abandons a share in decision©making at the primary level: the choice of the candidate.

-- Felknor, Dirty Politics

Reaching Logical Conclusions

This article is reprinted from pages 78-79 of Pearson-Allen: Modern Algebra , Book One. In the book it is one of several between-chapter articles that add interest and provike thought on subjects related to the topics discussed in the text.

Consider the two statements:

1. Any member of a varsity squad is excused from physical education.

2. Henry is a member of the varsity football squad.

Our common sense tells us that if we accept these two statement as true, then we must accept the following third statement as true:

3. Henry is excused from physical education.

We say that the third statement follows logically from the other two.

In drawing logical conclusions it does not matter whether the statements we accept as true are reasonable or sensible. This is because we depend entirely upon the form of the statements and not upon what we are talking about. Thus, if we accept the following statements as true:

1. All whales are mammals;  

2. All mammals are warm-blooded animals;  

3. All warm-blooded animals are subject to colds;

then we must conclude that


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