Need help on these two problems

A submersible robot is exploring one of the methane seas on Titan, Satum's largest moon. It discovers a number of small spherical structures on the bottom of the sea at depth of 8 meters [m], and selects one for analysis. The sphere selected has a volume of 2.1 cubic centimeters [cm3] and a density of 2.22 grams per cubic centimeter [g/cm]. When the rock is returned to Earth for analysis, what is the weight of the sphere in newtons [NJ? Gravity on Titan is 1.352 meters per second squared [m/s21 The density of methane is 0.712 grams per liter [g/L]. E Click the icon to view the conversion table. Click the icon to view the table of common derived units in the SI system. The weight of the sphere is N. (Round your answer to two significant digits.) The value of gravitational acceleration on Earth, 9.8 meters per second squared (m/s2) is actually an average value since it varies from place to place on the planet. In Mexico City, gravity is 9.766 meters per second squared [m/s ]. whereas in Helsinki gravity is 9.825 meters per second squared [m/s ] Click the icon to view the conversion table Click the icon to view the common derived units in the SI system. (a) How many pounds does a 64-kilogram [kg] person "gain" or "lose" if this person travels from Mexico City to Helsinki? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round your answer to three significiant digits.) OA. The person gains bm OB. The person loses lbm C. No change in lbm is observed