ashalabass41

Experiments show that it takes 1656 kJ/mol to break all the bonds in methane (CH4) and 4006 kJ/mol to break all the bonds in propane (C3H8). Based on these data, calculate the average bond enthalpy of the C―C bond.

1. The arc of the parabola y=x^2 from (1,1) to (2,4) is rotatedabout the y-axis. Find the area of the resulting surface.

2. An aquarium 2 m long, 1 m wide and 1 m deep is full of water.Find the work needed to pump half of the water out of theaquarium.

An aquarium 8 m long, 2 m wide and 3 m deep is full of water. Findthe work needed to pump half of the water out of theaquarium?
(The acceleration due to gravity is 9.8 and the density of water is1000 .)
note: show me how u did it, please?