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bagirrra123 [75]
3 years ago
8

When a drawing of a circle made in the center of a piece of paper with a black marker gets wet, the marker bleeds, and as the wa

ter moves through the paper the ink separates into several colors.
Chemistry
1 answer:
Ahat [919]3 years ago
8 0

Answer:

Chromatography

Explanation:

Chromatography is a technique for separating mixtures that involves the use of a moving liquid and filter paper. The solvent travels through the spots on the paper, taking the chemicals away in the opposite direction. If the solvent combination has been properly chosen, each of them will move at a different velocity than the others.

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If you had excess chlorine, how many moles of of aluminum chloride could be produced from 10.0 gg of aluminum? Express your answ
gayaneshka [121]

Answer:

The answer is 0.370moles (3 s.f)

Explanation:

Step 1: write the balanced equation for the reaction

Equation for the reaction:

2Al(s) + 6HCl(g) ---------> 2AlCl3(g) + 3H2(g)

Step 2: Equate the mole of the needed substances

So therefore,

2moles of aluminum will produce 2 moles of aluminum chloride

Note that:

Relative atomic mass of Al = 27 g/mole

And, 27g of Al = 1 mole of Al.

Step 3: Solve for the required number of mole.

2moles of Al = 2moles of AlCl3

Same as

1 mole of Al = 1 mole of AlCl3

27g of Al = 1 mole of AlCl3

10g of Al = (1/27 * 10g) of AlCl3

10g of Al = 0.370moles of AlCl3

Thanks

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3 years ago
In the reaction A+B - C+D, if element B is in excess, then-
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Explanation:

Determining the Limiting Reagent

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An environmental scientist studies _______.
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An environmental scientist studies the environment - you can see that in the beginning of the sentence :)
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