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soldi70 [24.7K]
3 years ago
8

How do scientists test ideas about chemical evolution?

Chemistry
2 answers:
maksim [4K]3 years ago
4 0
I think they test ideas about chemical evolution by doing experiments. Hope this helps
Lubov Fominskaja [6]3 years ago
4 0

Answer: By doing experiment.

Explanation:

Chemical evolution can be define as the generation or synthesis of a new chemical from reactants.

Chemical evolution occurs by doing experiment. The results of the experiments will support the cause of the chemical evolution.

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ancient Greece of 400 B.C.there was a brilliant philosopher named Democritus, and he proposed the Greek word atomos, which means uncuttable. And so as he explained, all matter was eventually reducible to discrete, small particles or atomos.

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A mineral sample is obtained from a region of the country that has high arsenic contamination. An elemental analysis yields the
Gnesinka [82]

Answer:

<em><u>CaAsHO₄</u></em>

Explanation:

The data has a mistake in one of the values there. I believe the mistake is on the hydrogen. So, I'm going to assume the value of Hydrogen is 0.6%, so the total percent composition would be 100.1% (Something better). All you have to do is replace the correct value of H (or the value with the mistaken option) and do the same procedure.

Now, to calculate the empirical formula, we can do this in three steps.

<u>Step 1. Calculate the amount in moles of each element.</u>

In these case, we just divide the percent composition with the molar mass of each one of them:

Ca: 22.3 / 40.078 = 0.5564

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H: 0.6 / 1.00794 = 0.5953

Now that we have done this, let's calculate the ratio of mole of each of them. This is doing dividing the smallest number of mole between each of the moles there. In this case, the moles of As are the smallest so:

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3 years ago
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KiRa [710]

Answer: 0.8M

Explanation:

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3 years ago
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