Why are constellations in predictable in the night sky, but why are planets so hard to find?

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

Compare and contrast physical changes with chemical changes.

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?