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VMariaS [17]
3 years ago
5

If acid precipitation rain changes the ph of a pond from 7.0 to 5.0, the level of hydrogen ion has changed by a factor of ______

__. question 9 options: 0.01 4.0 100 13.0 2.0
Chemistry
1 answer:
Karolina [17]3 years ago
5 0
When pH=7, [H⁺] =10⁻⁷.
When pH=5, [H⁺]=10⁻⁵.

10⁻⁵/10⁻⁷ =10²=100
The level of hydrogen ions increased by factor 100.
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Which of the following processes have a ΔS < 0? Which of the following processes have a ΔS < 0? carbon dioxide(g) → carbon
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Answer:

All of the above processes have a ΔS < 0.

Explanation:

ΔS represents change in entropy of a system. Entropy refers to the degree of disorderliness of a system.

The question requests us to identify the process that has a negative change of entropy.

carbon dioxide(g) → carbon dioxide(s)

There is  a change in state from gas to solid. Solid particles are more ordered than gas particles so this is a negative change in entropy.

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6 0
3 years ago
The glow emitted by a substance exposed to eternal radiation is called
wolverine [178]
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3 0
3 years ago
Liquidtight flexible nonmetallic conduit marked as ____ has a smooth seamless inner core and cover bonded together and one or mo
DanielleElmas [232]

Answer:

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Answer:

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3 0
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Answer:

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8 0
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