To find the enthalpy of a reaction in the lab, you measured the of the reactants

Mass and temperature 

By calculating the mass and the reactant as the specific heat and temperature changes.

Explanation:

The entropy is one of the thermodynamic properties of the system where the internal and is added to the product and the refers to the capacity to non-mechanical work and capacity to the release of the heat. And is expressed as the H → E + PV. and is the change of the internal energy and the plus the product of the constant.

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust. 

The answer is d. none  hope this .