Top Answer

To calculate the enthalpy change or heat energy of a phase change, use the formula q=m(heat of (fusion, vaporization, etc...)). Make sure to use the formula q=mc(delta T) to calculate the heat energy for the temperature changes in between phase changes. Add up all of the q values and you have your enthalpy change.

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0delta H = mass * heat capacity * delta temperature

Delta G (written triangle G) = Delta H -T Delta S

+delta H, -delta S, +delta G

Delta H symbolizes the change in Enthalpy.

It is not. The density and mass would be used to find the volume.

Say u know heat of formation at temperature Ta and u want to calculate it at a temperature Tb Delta H(at Tb) = Delta H(at Ta) + integral of (Heat capacity) from Ta to Tb

What is the delta H deg f of potassium?

deposition, ∆H is + hope that helped!

Either the change (which the delta refers to) of the height (which the h represents).

delta h of the solution = delta h of the lattice energy + heat of hydration delta h = enthalpy change heat of hydration should be negative.

Yes

I'm pretty sure its when the pressure remains constant. When the pressure is constant: q=delta U + P delta V The equation for delta H is: delta H = delta U +P delta V Therefore, when pressure is constant: delta H = q I think...

delta H = q + w where q = heat content and w = work done

the delta h for x hydrogen and x chlorine because it is aq and dissociates in water into h+ ions and cl- ions

Free-energy change. delta G = delta H - temperature x delta S delta G is free-energy delta H is a system that is defined as the difference between the change in enthalpy temp. x delta S is the product of the Kelvin temperature and the entropy change

when delta H is positive and delta S is negative

delta G= delta H - TdeltaS ∆G = ∆H - T∆S where ∆G is is the change in Gibb's free energy ∆H is the change in enthalpy ∆S is the change in entropy T is the temperature in KelvinThe mathematical expression for the change in free energy of a system delta G=delta H-T deltas. The answer is delta G is the change in free energy.

Exothermic Reactions: The delta h is always NEGATIVE! Energy is released (delta is the little triangle in front of the H)

it means that heat is released during the reaction and a + delta H means that heat is required/absorbed.

ΔH Na

944

+delta H, -delta S, +delta G

Richard H. Anderson is the current CEO of Delta Air Lines.

^Hreaction = ^Hf, products - ^Hf, reactants Apex

Delta H=reactant -product

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