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ivann1987 [24]
3 years ago
6

True or false? During a change of state the temperature of the substance does not change.​

Chemistry
1 answer:
irakobra [83]3 years ago
8 0

Answer:

false

Explanation:

the temperature of a substance can not remain constant as the substance changes from solid to liquid then finllay from liquid to gas. This is so because as a solid is heated it changes state and once it rechanges it boiling point it changes to gas or vapour.

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How many atoms are in one mole of gold? A) 1.97 x 1023 atoms. B) 6.02 x 1023 atoms C) 79 atoms. D) 197 atoms
Kobotan [32]

B. Is the Answer 6.022 * 1023


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Calorimeter containing 1000 grans of water the initial temperature of water is 24.85 degrees . the heat of water is 4.184 j/g de
kvasek [131]
<h3><u>Answer;</u></h3>

10.80 ° C

<h3><u>Explanation;</u></h3>

From the information given;

Initial temperature of water =  24.85°C

Final temperature of water = 35.65°C

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The specific heat of water ,c = 4.184 J/g °C.

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Change in temperature ΔT = 35.65°C - 24.85°C

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3 years ago
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5 0
3 years ago
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An acid-base indicator is used in what type of reaction?
Temka [501]
Acid - base indicators (also known as pH indicators) are substances which change color with pH. They are usually weak acids or bases. you use them if you want to know if a solution is an acid or it it's a base
4 0
3 years ago
A shampoo has a pH of 8.59. What is the [H3O+] in the shampoo?
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Answer:

2.57 e-9

Explanation:

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10^-8.59=2.57 e-9

6 0
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