Information about five planets is shown in the table below. Planet Diameter (km) Mass (kg) Mercury 4.88 x 103 3.3 x 1023 Jupiter 1.43 x 10 1.898 x 1027 Earth 1.28 x 104 5.97 x 1024 Mars 6.78 x 103 6.42 x 1023 Saturn 1.21 x 105 5.68 x 1026 a) Write down the name of the planet with the greatest mass
b) Work out the radius of Mercury giving your answer as an ordinary number.
c) Work out the difference between the masses of Jupiter and Saturn. Give your answer in standard form.