On Earth, the acceleration due to gravity is 9.8 m/s2. If a person has a mass of 65,000 g, how much force do they exert in Newton's? In pounds? (Note: 1 lb = 4.448 N)

What is the mass of 8 moles of sodium atoms

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6