Answer:
The concentration of hydrogen ions in moles per liter (M) is
Step-by-step explanation:
As we know
The hydrogen ion concentration of any solution at pH is given by
Substituting the given values in above equation, we get -
mol/l
7000 meters
We know that 1 km = 1000 meters
7 km * 1000m/km = 7000 meters
option A
option A y = 9√3 is the correct answer .
In∆ PQR
cos 30 = y /18
√3/2 = y / 18
y = 9√ 3
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Answer: 5km, 6000m, 8,000,000 mm, 7000000 cm
Note that:
1km = 1,000,000mm
1m = 1000mm
1cm = 10mm
Therefore,
5 km = 5 × 1,000,000mm = 5,000,000mm
7000,000 cm = 7,000,000 × 10 = 70,000,000mm
6,000 m = 6000 × 1000 = 6,000,000mm
Therefore, from the least to the greatest will be:
5km, 6000m, 8,000,000 mm, 7000000 cm