a raindrop has a mass of 50. mg and the pacific ocean has a mass of 7.08×10^20 kg. use this information to…

Explanation:

Step1: Convert mass of 1 raindrop to grams

$50\ mg = 50\times10^{- 3}\ g=0.05\ g$

Step2: Calculate mass of 1 mole of raindrops

1 mole contains $6.022\times 10^{23}$ entities. Mass of 1 mole of raindrops $m = 0.05\ g\times6.022\times 10^{23}=3.011\times 10^{22}\ g$

Step3: Convert mass of Pacific - Ocean to grams

Mass of Pacific Ocean $M = 7.08\times 10^{20}\ kg=7.08\times 10^{23}\ g$

Step4: Calculate moles of raindrops in Pacific Ocean

Number of moles of raindrops in Pacific Ocean $n=\frac{M}{m}=\frac{7.08\times 10^{23}\ g}{3.011\times 10^{22}\ g}\approx23.5$

Answer:

What is the mass of 1 mole of raindrops? $3.01\times 10^{22}\ g$ How many moles of raindrops are in the Pacific Ocean? $23.5$