Answer: 4 hours
Explanation:
It takes the kayak 1 minute to travel 35 meters.
Divide the total (8400m) by the amount of meters per minute (35m)
Now convert into hours. (Remember that 1h has 60min)
PH = -log [H+]
pH = -log (1.0x10^-4) = -(-4) = 4 or A
Silver is Ag from the latin Argentum
Lead is Pb from the latin Plumbum
A: It prevents most reactions from occurring spontaneously.
The answer above is correct.