I need help I tried many times and I don’t get it

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

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.