a reaction has an enthalpy change of –54 kj and an activation energy of 89 kj. what is the enthalpy change of the reverse reaction?

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

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

Why are pipes bursting in the in extremely cold weather?