This is called the surface runoff. It is part of the water cycle when the water from the mountains flow down to the rivers and empty out to the seas and oceans. Or it could also flow down through the soil. As it flows, it carries nutrients like nitrogen and sulfides, so that's why the oceans are salty because of surface water runoff.
Only CH3OH contains convalent bonds. Others are metal. But CH3OH is methanol.
Answer: One mole of lead (Pb) contains 6.02 × 1023 atoms and its mass is 207.2 g.
Explanation: please give me brainlist. i haven't been brainlist in a while. even my zodiac sign is ♓
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<h3>Answer:</h3>
[OH⁻] = 1.0 × 10⁻¹⁰ M
<h3>Solution:</h3>
In order to calculate concentration of hydroxide ion i.e. [OH⁻] first we will find the pOH by using following relation,
pH + pOH = 14
Putting value of pH given and solving for pOH,
4.0 + pOH = 14
pOH = 14 - 4.0
pOH = 10.0
As ,
pOH = -log [OH⁻]
So,
[OH⁻] = 10^-pOH
Putting value of pOH,
[OH⁻] = 10⁻¹⁰
[OH⁻] = 1.0 × 10⁻¹⁰ M