SOLUTION: Current evidence indicates 22% of the mass of an asteroid that crashed into Earth turned to dust and resulted in about 0.022 {{{g/cm^2}}} of the Earth’s surface being covered.

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Question 1152500: Current evidence indicates 22% of the mass of an asteroid that crashed into Earth turned to dust and resulted in about 0.022 g%2Fcm%5E2 of the Earth’s surface being covered.
a) If the asteroid had a density of about 2.0 g%2Fcm%5E3 and the area of the Earth is 510.1 trillion m%5E2, calculate the mass of the asteroid.
Found 2 solutions by josmiceli, Alan3354:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
.022 ( g / cm2 ) x ( 10^4 cm2 / 1 m2 ) = 220 g / m2
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510.1 X 10^12 ( m^2 ) x 220 ( g / m2 ) = 112222 x 10^12 ( g )
112222 x 10^12 ( g ) = 1.12222 x 10^17 ( g )
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Let +m+ = the mass of the asteroid
+.22m+=+1.12222%2A10%5E17+
+m+=+5.101%2A10%5E17+ g
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I don't think the density of the asteroid is needed
Get a 2nd opinion on this if needed

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
about 0.022 g/cm^2 of the Earth’s surface being covered.
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Makes no sense.