Araindrop has a mass of 50. mg and the pacific ocean has a mass of 7.08 x 10^20 kg. use this information to answer the questions below. be sure your answers have the correct number of significant digits. what is the mass of 1 mole of raindrops? round your answer to 2 significant digits. how many moles of raindrops are in the pacific ocean? round your answer to 2 significant digits.

Explanation:

It is known that according to mole concept, 1 mole of every substance contains atoms.

Therefore, mass of 1 mole of raindrops is as follows.

    Mass of 1 mole raindrops = mass of 1 rain drop × Avogadro's number

                       =

                       = mg

or,                   =          (as 1 mg = 0.001 g)

Therefore, mass of 1 mole of raindrops is g.

Now, the mass of Pacific ocean is calculated as follows.

            Mass of Pacific ocean =

As 1 kg = 1000 g. So, mass of Pacific ocean will be equal to .

Hence, moles of raindrops will be calculated as follows.

          Mass of Pacific ocean =

                          =

                          = 24 moles

Therefore, we can conclude that 24 moles of raindrops are in the Pacific Ocean.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

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