oikawaseyelashes oikawaseyelashes 08-09-2021 Physics contestada Mars has a mass of 642,000,000,000,000,000,000,000 kg. How would scientists express this number in scientific notation? A. 0.64224 kg B. 0.642 x 1024 kg C. 0.642 × 1021 kg D. 6.42 x 1023 kg