What 3 characteristics of matter does chemistry deal with?

1 answer:

3 0

Chemistry is concerned with:

1) Composition
The composition of matter helps determine how it will behave chemically and physically, and is studied in chemistry

2) Structure
The structure of a certain element or compound also governs how the substance behaves, making it another vital aspect of chemistry

3) Behavior
The behavior of substances is studied in order to have explanations presented for it, expanding our understanding.

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A gas is contained in a thick-walled balloon. When the pressure changes from 45.0 bar to 96.0 bar, the volume changes from 1.20

notsponge [240]

P1 * V1 ÷ T1 = P2 * V2 ÷ T2

45 * 1.20 ÷ 314 = 96 * V2 ÷ 420

30,144 * V2 = 22,680

V2 = 22,680 ÷ 30,144

The new volume is approximately 0.75 liter.

I hope I helped

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3 years ago

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Which of the following has more energy than visible light?

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It should be radio waves. If you need anymore help look up the wavelength chart online.

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In an electrolytic cell, the magnitude of the standard cell potential is the:______

melamori03 [73]

Answer:

a. minimum voltage that must be supplied for a redox reaction to occur

c. always equal to Eanode - Ecathode

Explanation:

In an electrolytic cell; The electromotive force(the maximum standard potential difference) of the cell formed by the system is defined as the standard electrode potential of the right handed electrode minus the standard electrode potential of the left hand electrode. (i.e $\mathbf{E^{\theta}_{cell}=E_{anode} - E_{cathode}}$ )

As we all known that the process by which chemical energy is being converted to electrical energy is called the Electrochemical cell. It consists of two half cells , an oxidation half cell reaction and a reduction half-cell reaction.The overall redox reaction results in a flow of electrons in an electric current which is produced by a minimum voltage.

Therefore, option a and c are both correct.

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Based on the electron configuration of the two

Whitepunk [10]

Answer:

Explanation:

Cuz the when you pair Li and Cl, it becomes LiCl (it has 1:1 ratio)

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Why do you think some of the indicators used in experiment 2 were different than the ones used in experiment 1?

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During selection of indicator. We choose an indicator which have pH range equivalent to the pH change of reaction to give better result and better observation.

So there are some different indicator are used in table 2 as compared to the table 1.

- Alizarin and phenolphthalein are basic indicator and their pH range is more than 8 so they are used in table 2

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