Select the correct answer. what is the percent composition of silicon in silicon carbide (sic)? a. 28% b. 50% c. 70% d. 142%

Can someone me with these questions plz.

Based on the equation and the information in the table, what is the enthalpy of the reaction?

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