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lys-0071 [83]
3 years ago
9

please help 13 points!!! cell wall chloroplasts mitochondria small vacuoles eukaryote cells How would you change the characteris

tics in this list, to describe the cells of organisms in the PLANT kingdom? A) remove mitochondria B) change eukaryote to prokaryote C) change cell wall to cell membrane D) change small vacuole to large central vacuole
Chemistry
1 answer:
Angelina_Jolie [31]3 years ago
4 0

Answer:

A.

Explanation:

It’s just right

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Which of the following is not a physical change?
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Answer:

b or d

Explanation:

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Antifreeze is added to a car's radiator to protect it. Which of the following
zhenek [66]

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the correct answer is b antifreeze protects the radiator during summer in winter.

Explanation:

Antifreeze is (typically mixed with water) to help manage the engine during extreme temperatures. As the temperature fluctuates between hot and cold coolant is distributed throughout the engine block to sustain even operating temperature.

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Someone please help me ASAP!​
stealth61 [152]

Answer:

Increasing the temperature of the reactants

Explanation:

This causes more vibrations to occur, hence increasing the kinetic energy of the particles. The number of particles with activation energy would increase as well because they have higher kinetic energy. Kinetic energy is also the reason why the collision between particles increases. And the frequency of effective collisions increases because of the kinetic energy as well, keep in mind the particles must also be orientated in the correct way as well.

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3 years ago
Draw the structure with the molecular formula C6H14O that most likely produced the below IR and 1H NMR. The 13C NMR data is 78.3
spayn [35]

Answer:

                   The answer is 2,3-dimethylbutan-2-ol and the structure is attached below.

Explanation:

                     Although we are not provided with ¹H-NMR spectrum and IR spectrum but still we can elucidate the ¹³C-NMR data and finalize a plausible structure.

                      First of all we look at the molecular formula, we can conclude from the formula that the structure given is saturated in nature because the hydrogen deficiency index of this formula is zero. Hence, we can say that there is no double bond either between Carbon atoms or between carbon and oxygen atom. This can also be proved by the absence of peaks in downfield as unsaturated compounds and carbonyl compounds give value above 100 and 200 ppm respectively.

                      Secondly, we can also conclude that among the six carbon atom two pairs of them are having same electronic environment because we are having only 4 signals hence we can conclude that two pairs have same chemical shift values.

                       Also, after making every possinble isomer of given molecular formula the structure of 2,3-dimethylbutan-2-ol was found to be the most accurate structure.

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3 years ago
What does converse mean
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engage in conversation.

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