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VikaD [51]
3 years ago
9

Describe at least two ways that a researcher can minimize experimental errors in an investigation.

Chemistry
1 answer:
Leto [7]3 years ago
8 0
Experimental errors can be of two kinds: human error and analytical error. Analytical error can be corrected easily. You just have to use instruments that are of high precision. For example, instead of using the platform balance, use the analytical balance which displays 4 decimal places to be highly accurate. For the human error, this is subjective. The only way to correct human error is to be more meticulous on your data measurements.
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Al2(CrO4)3 percentage of Al
jenyasd209 [6]

Answer:

13.4%

Explanation:

Take the molar mass (26.98) of Al x 2 because there are 2 moles in the given compound. Divide this number by the total molar mass of the compound (401.9) this gives you .134. To get a percentage mulitply by 100 for 13.4%.

[(26.98 x 2)/401.9] x 100 =13.4

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Indicate which reaction will occur faster. Explain your reasoning. Select the single best answer. Hexyl chloride or cyclohexyl c
Maslowich

The question is incomplete, the complete question is;

Indicate which reaction will occur faster. Explain your reasoning. Select the single best answer Hexyl chloride or cyclohexyl chloride with sodium azide in aqueous ethanol O Cyclohexyl chloride reacts faster because it is more soluble in the solvent OHexyl chloride reacts faster because it is less sterically hindered. O Cyclohexyl chloride reacts faster because its carbocation intermediate is more stable. Hexyl chloride reacts faster because hydrogen abstraction is more likely to occur in this compound.

Answer:

Hexyl chloride reacts faster because it is less sterically hindered.

Explanation:

Now we have to think through the problem carefully. We must remember that the azide ion is a good nucleophile. Being a good nucleophile, we should be thinking about an SN2 reaction mechanism.

Though ethanol is a polar protic solvent which may weaken the nucleophile by hydrogen bonding, the nucleophile will still react very fast with a primary alkyl halide such as hexyl chloride via SN2 mechanism.

The substrate is easily accessible to the azide ion in hexyl chloride compared to cyclohexyl chloride hence hexyl chloride reacts faster than cyclohexyl chloride.

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3 years ago
Suppose a large atom bonds with a small atom.  Will the properties of the new molecule be the same as the large atom, the small
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