16g.
mol=gram/molar mass
4.00mol=g/4.0 molar mass of Helium
4mol*4g/mol= 16grams
Nuclear power plants real ease energy by FISSION
(this is the process when a heavy, unstable atomic nucleus splits into 2 or more lighter elements. This process releases lots of energy.)
I hope this helped you out! :)
Answer: 3, the amount per unit volume of a particular material
Answer:
The difference between the energy of the reactants and the energy of the products is called the enthalpy change (∆H) of the reaction. For an exothermic reaction, the enthalpy change is always negative. In an endothermic reaction, the products are at a higher energy than the reactants.
Explanation: