Answer: D
Explanation:
im not sure if its wright or not
Answer:
Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms. A mole of water molecules contains 2 moles of hydrogen atoms and 1 mole of oxygen atoms.
Explanation:
Answer:
i will tell some examples of plasmas they are:
1.lightning
2.solar wind
3.welding arcs
4.stars(including the sun)
5.the earths's ionosphere
That acid rain has lowered the ph of a particular lake to ph 5.0. the hydroxide ion concentration of this lake is
1 × 10^-9 mol of hydroxide ions per liter of lake water
pH + pOH = 14
pOH = 14 - 5
pOH = 9.00
pOH = -log [OH⁻]
[OH⁻] = 10^-pOH
[OH⁻] =
mol
Therefore,
the hydroxide ion concentration of this lake is 1 × 10^-9 mol
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