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sineoko [7]
3 years ago
10

Caffeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed ratio. is it a mixture or compund

Chemistry
1 answer:
Morgarella [4.7K]3 years ago
7 0
Caffeine is a fixed molecule. It is a compound.
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Draw the mechanism for the addition of methylmagnesium bromide to propanoyl chloride (CH3CH2COCl) to give 2-methyl-2-butanol.
Ghella [55]

Answer:

Reaction mechanism has been given below

Explanation:

  • Propanoyl chloride contains an electrophilic carbonyl center to give  nucleophilic acyl substitution reaction by removing Cl group with a strong nucleophile like methylmagnesium bromide.
  • Two equivalent of methyl magnesium bromide react with cabonyl center followed by protonation of negatively charged oxygen atom gives 2-methyl-2-butanol.
  • In the first step, nucleophilic acyl substituion occurs. In the second step, nucleophilic addition occurs. In the third step, protonation occurs.
  • Reaction mechanism has been shown below.

7 0
3 years ago
explain how how to correct for the partial pressure of water when calculating the partial pressure of a dry gas that is collecte
noname [10]
Pressures simply add. If the partial pressure of gas is three and the partial pressure of water is five, the total pressure is eight. Find the partial pressure for water at the temperature of your experiment, subtract it from your <span>pressure reading.</span>
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3 years ago
Do you think that the human being is the center of the universe?
Andrej [43]
I think that the sun is the center of the universe, not a human being. Everything revolves around the sun, not someone. U know when to sleep, when the time is, and when to wake up based on the sun. All the planets revolve around it. This is why I think the sun is the center of the universe, not a human being.
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3 years ago
Does changing the temperature or concentration of the reacting particles affect the rate at which the reaction occurs?
Agata [3.3K]
Answer: yes


When the concentration of all the reactants increases then the rate of reaction increases. When the concentration decreases then the rate of reaction decreases.

This all because more molecules or ions form new compounds. Or losses.
4 0
3 years ago
EXPERIMENT 1: How do you expect your coarse titration volume at the color change to compare to your fine titration volumes?
olchik [2.2K]

In the endpoint when the indicator changes color it gives the information that the acid is neutralized by the base.

<h3>What is Titration ? </h3>

Titration is also known as titrimetry is a technique where a solution of known concentration is used to calculate the concentration of the unknown solution. Titration is a laboratory technique.

<h3 /><h3>What is Endpoint ? </h3>

The point at which the indicator changes the color is known as Endpoint.

Thus from the above conclusion we can say that In the endpoint when the indicator changes color it gives the information that the acid is neutralized by the base.

Learn more about the Titration here: brainly.com/question/186765

#SPJ1

6 0
2 years ago
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