Mathematics, 19.01.2021 22:40, igtguith

6. The mass of Mars is 6.42 x 10^23 kilograms. The mass of Mercury is 3.3 x 10^23 kilograms. a. What is the combined mass of Mars and Mercury expressed in scientific notation? b. What is the difference in the mass of the two planets expressed in scientific notation? PLEASE ANSWER WITH COMPLETE STEPS;) THANK YOU. (I giving 20 pts)

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6. The mass of Mars is 6.42 x 10^23 kilograms. The mass of Mercury is 3.3 x 10^23 kilograms. a. What...