In a competition, an athlete throws a discus though the air. What was the average speed of the discus if it traveled 107 meters over a time of 12 seconds?

Drug abuse will not lead to physical and psychological dependence. true or false ?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .