Why does a chemical equation have to be balanced

Lewis structure and molecular geometry for nh2cl

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

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