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zubka84 [21]
2 years ago
13

La masa molecular de la cafeina es de 194,19g ¿cual es la formula molecular de la cafeina ?

Chemistry
1 answer:
Zina [86]2 years ago
4 0

Answer:

the formula for the molecular caffeine is C8H10N4O2

Explanation:

percent to mass, mass to mole, divide by small multiply till whole

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Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is yellow, and C is red. In the reactions in
igor_vitrenko [27]

Explanation:

Oxidizing agents are defined as the agents which oxidize other substance and itself gets reduced. These agents undergoes reduction reactions.

Reducing agents are defined as the agents which reduces the other substance and itself gets oxidized. These agents undergoes reduction reactions.

When oxidizing agent-A get reduced it changes green to colorless.

A+e^-\rightarrow A^-

When oxidizing agent-B get reduced it changes yellow to colorless.

B+e^-\rightarrow B^-

When oxidizing agent-C get reduced it changes red to colorless.

C+e^-\rightarrow C^-

1) When we added solution C that oxidizing agent-C in solution containing B^- ions changes from red to yellow:

C+B^-\rightarrow C^-+B(yellow)

So, in this C is oxidizing B^- ion into B which yellow in color.

C is reduced and B^- ions is oxidized.

Here, B^- are oxidized by C which means that C a better oxidizing agent than B.

2) When a solution of C is mixed with one containing A- ions, the color remains red.

C+A^-\rightarrow no reaction

As we had observed that no color change was seen on adding substance C to the solution with A^- ions which indicates that C was unable to oxidize A^- ions. Hence, not a better oxidizing agent than A

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