1. a) Mars has a mass of approximately 600,000,000,000,000,000,000,000 kg. Expre
ID: 114565 • Letter: 1
Question
1. a) Mars has a mass of approximately 600,000,000,000,000,000,000,000 kg.
Express this quantity in scientific notation, with units: _____________________________ b) A water molecule has a mass of 0.00000000000000000000000003 kg.
Express this quantity in scientific notation, with units: _____________________________ c) How many times more massive is Mars than one water molecule? (Try not to use a
calculator!):_____________________________
d) How many order of magnitudes is this ratio? _____________________________
Explanation / Answer
1.a) In scientic notation of 600,000,000,000,000,000,000,000 is written as 6 × 10 23
water molecule mass 0.00000000000000000000000003 can be written as 3 × 10-26
mars is 2 × 1049 times heavier than water molecule
the order of ratio is 49
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