Answer:
Mass by mass
Explanation:
Because it's telling only about mass in grams
Answer:
the triangular model and the cubic model
Potential energy is the energy stored. What do u think it is? (I don't really know)
Answer:
The chemical characteristics of carbon affect the characteristics of organic molecules due to its tetravalent nature. It has four valence electrons in which it shares with other elements in order to form an octet configuration.
Carbon atoms are also capable of forming double and triple bonds with other atoms. These properties help determine the functional group present and gives us a knowledge of the chemical features such as polarity, melting and boiling present in the compound.
The statement is false because endothermic reactions have a positive enthalpy change, because heat is being added to the system because it requires more energy to react