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Reil [10]
3 years ago
11

When reading a historical narrative, critical thinkers need to ask which of the following questions?

SAT
1 answer:
Kaylis [27]3 years ago
6 0

Answer:

There are two Reflective questions to ask after reading a narrative. One is "Is this experience typical of a larger group?" and the other is to ask yourself if you would have done something differently than the person in the story.

Explanation:

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Advanced engineering mathematics peter o'neil 7th edition solution
Wittaler [7]

Answer:

d

Explanation:

5 0
2 years ago
A 20.0-ml sample of a 0.200 mhbr solution is titrated with a 0.200 mnaoh solution. calculate the ph of the solution after the fo
kumpel [21]

The calculated pH of the solutions are given below:

  • The pH of the solution after 14.0 ml of base is added to it is calculated as 1.45.
  • The pH of the solution after 19.8 ml of base is added to it is calculated as 3.0
  • The pH of the solution after 20.0 ml of base is added to it is calculated as 7.

<h3>What is pH?</h3>

This is the level of acidity or alkalinity of an aqueous solution. The pH of a substances tells if its an acid, base or neutral.

HBr and NaOH while in water would dissociate and they would become H+ and OH- respectively.

Mol of HBr = Mol * Vol

= 0.200 * 20mL

= 4 mmol

A. Moles of NaOH added

= 0.2 X 14

= 2.8 mmol

Moles of H+ that did not react

= 4 - 2.8

= 1.2 mmol

1.2/1000 = 0.0012 moles

Total volume = 20 + 14

= 34 mL to litres

= 0.034 L

Molarity of H+ = 0.0012 / 0.034L

= 0.035 M

-log[0.035] = 1.45

The pH of the solution is  1.45

B. NaOH added = 19.8 * 0.2 =

3.96 mmoles

The unreacted solution

= 4.0 - 3.96

= 0.04 mmol

0.04/1000 = 0.00004 moles

Total volume = 20 + 19.8

= 39.8mL

Converted to litres = 0.0398L

Molarity  = 0.00004 / 0.0398L

= 0.001

-log(0.001) = 3.0

The ph Is therefore 3.0

C. Moles of NaOH added = 0.2*20mL = 4mmol

All the H+ are going to be consumed here. This would result into a neutral solution pH = 7

<u>Complete question:</u>

20.0 mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the PH of the solution after the following volumes of base have been added.

A. 14.0 mL

B. 19.8 mL

C. 20.0 mL

Read more on pH here; brainly.com/question/22390063

3 0
2 years ago
In your opinion, did the speaker actually hear a ghost? Why or why not?
alexandr1967 [171]

In my opinion, the speaker heard the ghost.

3 0
3 years ago
Choose the right name to complete each sentence. The american inventor developed the idea of interchangeable parts.
Inga [223]

Answer:

Eli Whitney

Explanation:

5 0
2 years ago
Read 2 more answers
Algebra 1: concepts, skills, and problem solving (california) solutions
lilavasa [31]

An example of Algebra 1 problem solving question is  (3 + a) + b².

<h3>What is algebra?</h3>

The Basics of Algebra are known to cover simple math areas such as numbers, variables,  multiplication, division that are found in algebraic expressions.

Looking at this question,  (3 + a) + b², you collect like terms;

(3 + a) + b²

= 3a + b²

Therefore, the answer is 3a + b².

Learn more about algebra from

brainly.com/question/22399890

8 0
2 years ago
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