How does a balanced chemical equation show that mass is conserved? a. it has the same coefficients on both sides of the equation. b. it has the same element symbols on both sides of the equation. c. it has the same number of atoms of each element on both sides of the equations. d. it has the same number of molecular formulas on both sides of the equation.

The mini-refrigerator fire was most likely caused by what type of wiring?

Acar of mass 800kg is moving at a speed of 2.2m/s.

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.