The heat involved in a temperature change can be calculated using the following equation. Q (heat) = m(mass) x C(specific heat capacity) x ΔT (change in temperature). Jonathan was running a test in the lab to find out how many calories of energy it would take to heat up a piece of iron. He held the iron in a flame for 1 minute. He immediately placed the iron in 50.0 grams of water that had a temperature of 20oC. He used a thermometer in the water and watched it closely. The thermometer showed the temperature of the water rising and it peaked at 24oC. How much heat did the iron metal transfer to the water? The specific heat capacity of water is 1.00 cal/g-Co
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.
The heat involved in a temperature change can be calculated using the following equation.
Q (heat) = m(mass) x C(specific heat capacity) x ΔT (change in temperature).
Jonathan was running a test in the lab to find out how many calories of energy it would take to heat up a piece of iron. He held the iron in a flame for 1 minute. He immediately placed the iron in 50.0 grams of water that had a temperature of 20oC. He used a thermometer in the water and watched it closely. The thermometer showed the temperature of the water rising and it peaked at 24oC. How much heat did the iron metal transfer to the water? The specific heat capacity of water is 1.00 cal/g-Co
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