Answer:
148g/mol
Explanation:
The molar mass of a compound is the sum of the molar masses of all the individual elements present in the compound.
Molar Mass of Mg(NO3)2 = 24 + 2[14 + (16x3)] = 24 + 2[14 + 48] = 24 + 2[62] = 24 + 124 = 148g/mol
Ethanol contains an alcohol group (-OH), which includes hydrogen bonding. Hydrogen bonding is stronger than other IMFs such as Van der Waals forces and Dipole-Dipole.
Ethene only has Van der Waals forces as it is an alkene with only C-H or C-C bonds. These means that the forces are not as strong.
Since ethanol contains hydrogen bonding, it will take a higher temperature in order to break these bonds, and thus results in a higher boiling point than ethene.
Answer:
Their identity changes in both Reaction A and Reaction B.
Scientific knowledge is constantly being refined and changed as scientists perform studies using the scientific method. New discoveries such as the recent discovoery of water on Mars, cause scientists to re-evaluate their previously held theories.