a commercially nitric acid has a density of 1690mg/ml and 53% nitric acid by mass. calculate the molarity and the molality. and what volume will be needed to prepare 250ml and 3M of the solution.

b. th3 n4zc4 pl4t3 15 c0nv3rg1ng w1th the s0uth 4m3ric4n pl4t3.

particle   p is an electron and particle q is a neutron

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >