Answer:
Step-by-step explanation:
Distance between earth and moon in meters = 386400 x 10³ m
Speed of ship = 11184.7258 m / s
Time taken = distance of moon from earth / speed of ship
= 386400 x 10³ / 11184.7258
= 34.5471 x 10³ s
= 34.5471 x 10³ / 60 x 60 hour
= 9.596 hours
The answer is option 3.
You have to substitute H+=2×10^(-9) into the equation of pH :
pH = -log[H+]
H+ = 2×10^(-9)
pH = -log[2×10^-9]
= 8.70 (3s.f)
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Option B is tge right answer.
3.07/10⁴= 0.000307