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Mila [183]
3 years ago
15

7. Do you have any reservations about taking this course? Explain. How can I help?

Chemistry
1 answer:
Pavel [41]3 years ago
3 0

Answer:

Reservations means to say, are there any thoughts you have about this course that are negative. And what can your teacher do to help you excel, or succeed in this course. Good luck to you, and remember to take deep breathes when you need a break.

Explanation:

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What three tests must all theories pass to be considered a "proven" theory?
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3) Is the phenomena truly natural or was it the result of a man-made force enacting upon it?

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1) How much water must be added to 500.mL of 0.200 M HCI to produce a 0.150M solution?
zloy xaker [14]

Answer:

1)

(500.mL)(.200M)/.150M = 667 mL

667mL - 500mL = 167mL of water is needed

2)

1.0 L = 1000mL

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x = .28M

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3 years ago
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5 0
3 years ago
The Lucas test has _______ results based on the type of alcohol present because the reaction involves a _________, which is ____
Olin [163]

Answer:

1) positive

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3) most stable

4) faster

Explanation:

A common test for the presence of alcohols can be achieved using the Lucas reagent. Lucas reagent is a mixture of concentrated hydrochloric acid and zinc chloride.

The reaction of Lucas reagent reacts with alcohols leading to the formation of an alkyl chloride. Since the reaction proceeds via a carbocation mechanism, tertiary alcohols give an immediate reaction. Once a tertiary alcohol is mixed with Lucas reagent, the solution turns cloudy almost immediately indicating an instant positive reaction.

Secondary alcohols may turn cloudy within five minutes of mixing the solutions. Primary alcohols do not significantly react with Lucas reagent obviously because they do not form stable carbocations.

Therefore we can use the Lucas reagent to distinguish between primary, secondary and tertiary alcohols.

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