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wariber [46]
3 years ago
12

A teacher wants to figure out the amount of a solution that is needed for a titration experiment in a class lab. The class has 1

5 students, and each experiment needs 50 mL of solution.
If each student will perform the experiment two times, how many mL of solution will the teacher need for the whole class
Chemistry
2 answers:
Tju [1.3M]3 years ago
5 0

Answer:

1500 ml

Explanation:

You need to know how many milliliters will be used in this titration experiment, so if you have 15 students and each one uses 50 mL of solutions, you will multiply these numbers and obtain 750 ml, then you will perform the experiment twice, so you will need 750*2 = 1500 ml.

baherus [9]3 years ago
3 0
15 students times 50 mL per student. 750 mL Then 750 times two so you can do two experiments per person.
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Atoms of which element react spontaneously with mg2+ (aq)?
ehidna [41]
The complete answer contains the answer choices.


This is the complete question:


Atoms of which element react spontaneously with Mg2+(aq)? (1)chromium
(2)barium
(3)iron
(4)zinc


Answer: option 2. barium.


Explanation.


1) Mg ²⁺ (aq) is the aquous cation of the metal Mg.


2) Only a metal more reactive than Mg will be able to exchange with it the oxidation states.


3) Mg is an earth alkalyne metal (group 2 of the periodic table). The metals from this group are more reactive than the metals in the groups to its right: 3, 4, 5, 6, 7, ... Only the alkalyne metals (those in group 1) are more reactive than the earth alkalyne metals.


4) Of the list, barium is the only alkalyne metal, so it is more reactive than Mg and will be able to deliver 2 electrons to transform the cations Mg²⁺ into Mg while the very Ba will become Ba²⁺.


5) Chromium, iron and zinc are transition metals, so less metallic (reactive) than Mg.
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Three students are labeling organisms in their diorama. Zola wants to label the algae and mushrooms as photosynthetic. Saffi wan
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Answer:

Saffi only

Explanation:

I just took the test and that was the correct answer :)

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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.

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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.

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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.

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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;  

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

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