Dimensional analysis: a room measures 775 cm x 1400 cm x 260 cm. the density of oxygen is .001429 g/cm^3. how many kilograms of oxygen are present in the room

The  number  in Kg  of oxygen that  are present  in the room is  

403.1209  kg

calculation

mass=density x volume

density = 0.001429 g/  cm³

volume  =775 cm x 1400 cm x 260  cm =2.821 x10^8 cm³

mass  =0.001429 g/cm³  x( 2.8 x 10^8 cm³) =403120.9 grams

convert  g to Kg

that is  1 kg  = 1000 g

             ? kg    =403120.9 g

by cross   multiplication

=[(403120.9  g  x 1 kg) /1000 g]  =403.1209 kg

first one is the correct answer

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?