Which statement is true about an empirical formula?

a.) it is the true ratio of atoms in a formula unit.
b.) it is the simplest ratio of atoms in a formula unit.
c.) it represents the true molecular mass of a chemical formula.
d.) it represents the highest ratio of coefficients in a chemical formula.

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added