16.11.2021

The next two questions go together. first answer part A and answer part B

. 4

Faq

Chemistry
Step-by-step answer
P Answered by Master

The total volume of the buffer is 75,0mL

Explanation:

A buffer is a mixture of a weak acid with its conjugate base or a weak base with its conjugate acid.

The buffer than Stu and Doc made is:

CH₃COOH ⇄ CH₃COO⁻ + H⁺

Doc add 30.0 mL of 0.0635 M CH₃COOH while Stu add 45.0 mL of 0.0285 M NaCH₃COO (CH₃COO⁻)

Thus, the total volume of the buffer is:

30,0mL + 45,0mL = 75,0 mL

I hope it helps!

Chemistry
Step-by-step answer
P Answered by Master

The total volume of the buffer is 75,0mL

Explanation:

A buffer is a mixture of a weak acid with its conjugate base or a weak base with its conjugate acid.

The buffer than Stu and Doc made is:

CH₃COOH ⇄ CH₃COO⁻ + H⁺

Doc add 30.0 mL of 0.0635 M CH₃COOH while Stu add 45.0 mL of 0.0285 M NaCH₃COO (CH₃COO⁻)

Thus, the total volume of the buffer is:

30,0mL + 45,0mL = 75,0 mL

I hope it helps!

Advanced Placement (AP)
Step-by-step answer
P Answered by PhD

1. B. Her learning style and the instructor’s teaching style conflict.

While Keisha is doing better when information is presented in a clear manner (names of key figures, dates, major points), the instructor teaches about concepts that are more abstract and wants students to analyze on their own and reach answers that way. Keisha's approach is more direct than the instructor's, and that is causing her trouble.

2. D. Visit the instructor during office hours and explain her difficulties. Work together to find a way to maximize Keisha’s learning despite the differences in their teaching and learning styles.

Keisha's problem is something that definitely can and should be solved. Her visiting the instructor's office would help the instructor understand the issue and give them both an opportunity to find a solution together. The instructor could give Keisha advice, suggest some learning techniques that are a bit different than Keisha's own but are still something she could fulfill. Or, maybe, he could start using a bit different approach, which could make studying easier for other students who have similar issues.

3. B. Stay up all night cramming the night before.

Good sleep is something a student needs before an exam, so cramming all night before it is not a good idea. Besides, it is not probable that she would learn much that way. There are other things she could do, like visiting the instructor or joining a study group.

4. B. Actively take notes while she is listening to lectures and add symbols, charts, or graphs to map out concepts.

Different people have different learning preferences, and as Keisha learns through a visual mode, she should add symbols, charts and graphs to her notes to help her visualize the material and memorize it with more ease. By doing so, she shouldn't have to worry about failing anymore.

English
Step-by-step answer
P Answered by Specialist

Question 1: B) “. . . to one in which almost half the oil we use comes from foreign countries . . .”

When half of the oil your country uses depends on other nation sending it to you, you are actually too dependent on foreign oil.

Question 2: A) If Americans come together over the energy crisis, people will regain confidence in America.

A fallacious reasoning is when you draw a conclusion from an argument, that has no direct correlation with the conclusion, it´s not sure that if americans come together over the energy crisis people will regain confidence in america, is just not true nor related.

English
Step-by-step answer
P Answered by Specialist

Question 1: B) “. . . to one in which almost half the oil we use comes from foreign countries . . .”

When half of the oil your country uses depends on other nation sending it to you, you are actually too dependent on foreign oil.

Question 2: A) If Americans come together over the energy crisis, people will regain confidence in America.

A fallacious reasoning is when you draw a conclusion from an argument, that has no direct correlation with the conclusion, it´s not sure that if americans come together over the energy crisis people will regain confidence in america, is just not true nor related.

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