The student made 250 cm3 of a solution of citric acid of concentration 0.0500 mol/dm3 Calculate the mass of citric acid (C6H8O7) required. Relative atomic masses (Ar): H = 1 C = 12 O = 16

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!

Asuspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. if one wishes to follow this process by monitoring the release of 14co2, at which positions in the glucose molecule would the 14c label need to be incorporated?