When the amount of a radioactive substance is reduced by half, what has occurred?

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

What is the equilibrium constant of aa+bb=cc+dd

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.