In an exothermic reaction what is true of enthalpy? a) it has increased b) it has decreased c) it has remained unchanged d) it has a minimum doubled

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation

In which phase of mitosis do the spindle fibers pull the chromosomes apart to opposite sides of the cell ?

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?