Describes how Anders Celsius devised the temperature scale that bears his name

1 answer:

3 0

He used a tube of mercury and marked the height of the mercury when placed in an ice bath as 0 degrees celsius, when he placed the tube in a boiling, he marked the height of mercury and called that 100 degrees celsius, he marked it linearly between 0-100 degrees celsius

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Consider a 5 molecule system. Assume that the molecules can either be found on the right side or left side of their container.

8090 [49]

Answer:

The correct answer is 6 possible states

Explanation:

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Which of the following reactions would be classified as oxidation-reduction? Check all that apply. View Available Hint(s) Check

erica [24]

Answer:The 1st and 2nd reactions are the example of oxidation -reduction.

Explanation:

Oxidation is basically when a species loses electrons and reduction is basically when the species gains electrons.

A reaction is known as an oxidation -reduction reaction only if oxidation and reduction simultaneously occur in the reaction. It basically means if a species is getting oxidized in the reaction then the other species present in the system must be reduced in the reaction.

Oxidation-reduction reactions are also known as redox reactions.

In the 1st reaction the oxidation state of Na in reactant is 0 and in products is +1 hence Na is oxidized and the oxidation state of chlorine is 0 in reactants and in products is -1 so chlorine is reduced. Hence Na is oxidized and Cl is reduced so the reaction is a example of oxidation-reduction.

2Na(s)+Cl₂(g)→2NaCl(s)

In the second reaction the oxidation state of Na in reactant is 0 and in products is +1 hence Na is oxidized and the oxidation state of Cu is +1 in reactant and 0 in products so Cu is reduced. Hence Na is oxidized and Cu is reduced so the reaction is an example of oxidation-reduction.

Na(s)+CuCl(aq)→NaCl(aq)+Cu(s)

In the third reaction the oxidation state of Na changes from +1 to +1 and that of Cu also changes from +1 to +1. So there is no change in oxidation state of the species present in reactants and products. Hence this reaction is not an example of oxidation and reduction.

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Temperature is defined as the average kinetic energy of the molecules. what is the temperature reading when all molecules comple

Kruka [31]

Answer:

Temperature is the average kinetic energy of the molecules. Absolute zero is the temperature where molecular motion stops and is the lowest possible temperature. ... The relationship between Celsius and Kelvin temperature scales is given by K = °C + 273.15.5

so the answer is B

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Answer and Explanation:

In order for the spotting phase to be efficient and for the sample to register the repeated applications of the sample, it is necessary that in addition to the solubility and low toxicity, the solvent has a low boiling point, but that allows an efficient and rapid evaporation, whenever necessary, so that it is possible to release the sample on the TLC plate.

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1. different gases mix together to form air and no new comound is formed
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