How do the valence electrons of an element determine how they will combine with other elements to produce a compound?

1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c

The identities of substances are the same before and after which type of change

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius