Ametallurgist has a 42.0-gram sample of an object of unknown composition. on testing it, the metallurgist finds that it takes 2,878 joules of heat to melt it completely. what is the object's heat of fusion?

56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

Chemistry worksheet - i am not sure what they are asking for exactly?