In a sample of 400 lithium atoms, it is found that 30 atoms are lithium-6 (6.0g/mol) and 370 atoms are lithium-7 (7.0g/mol). calculate the average atomic mass of lithium

Timothy plays basketball in his driveway during the summer. By accident, he left the basketball outside during the winter. He tried to bounce it, but it would not bounce because it was partially deflated.

Yard converted to cm

How many electrons can be described by the quantum numbers n = 7, l = 1?

Describe the results of a chemical change

Exercise : For the pentapeptide Glu - met-Arg - Thr-Gly (a) Name the carboxyl - terminal residue (b) give the # of charged groups at pH7 (c, give the net charge at pH 1 id, draw the peptide bond between Thr & Gly

A critical biotic factor in Yellowstone National Park is A) geographic isolation B) high elevation C) high temperature in the summer D) population of wolves E) proximity to water

If energy can neither be created nor destroyed in a chemical reaction, what can happen to the energy

Effect of ph on conformation of aplha helix

How can we tell when something is polar or non-polar in an Inter-molecular Force?

A reaction is most likely to occur when reactant particles collide with