Which scenario bellow BEST illustrates the law of inertia ?

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Why is it incorrect to balance a chemical equation by changing the subscripts? explain.