you plan to melt some old gold jewelry so that you can make something new. when it is right at the melting point, you add 505 cal of heat, and all of the jewelry becomes liquid. if the fus of gold is 15.3 cal divided g, what is the mass of the jewelry that you melted?
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
you plan to melt some old gold jewelry so that you can make something new. when it is right at the melting point, you add 505 cal of heat, and all of the jewelry becomes liquid. if the fus of gold is 15.3 cal divided g, what is the mass of the jewelry that you melted?
If a 46.0 g alumnium block is heated from 21.5 celsius to 102.5 celsius, how much heat was added to the block? the specific heat of Al is 0.217 cal divided by g times celsius
A 5.50L balloon is in the air at 1.35 atm pressure and 17 celsius. The balloon is then taken under the water of Lake springfield to a depth of 12 meters. the temperature is 9 celsisus and the pressure is 1.95 atm. what is the volume of the balloon at this depth?
if you store 4.25 moles of propane in a container with a volume of 6.05 L at 305 K, what is the pressure inside the container?
If you have 43.0L of cyclopane once used as an anesthetic at a pressure of 1.33 atm and room temperature is 23 celsius. how many moles of gas are in the container?
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