What is the heat capacity of a substance if it takes 5.2 kJ of heat to warm 597.8 g by 46.6°C? Heat Capacity: The heat capacity of a substance is a physical property of the substance that gives the amount of energy required to change the temperature ...
Q.3. What is the importance of Hess’s law of constant heat summation?Ans: Hess’s law of heat summation and its consequence can be applied to any reaction to calculate the enthalpies of the reaction easily.Q.4. What is the most important application of Hess’s law?Ans: The most ...
The Stefan-Boltzmann constant is used in many practical applications in physics. In particular, the constant helps with the derivation of many physical quantities, such as the amount of heat a black body radiates. It is also used to calculate the temperature required to generate a particular amou...
heat capacity can depend on both ambient pressure and ambient temperature. Scientists often want to know the heat capacity of a gas at a constant pressure, while other variables such as temperature are allowed to change; this is known as the Cp. Similarly, it may be useful to determine a g...
What is the value of the specific heat capacity of a perfect calorimeter? How much heat is absorbed by the calorimeter, if the temperature change is 8 degrees C and the calorimeter constant (Heat Capacity) is 3.3 J/K? How much heat is absorbed by a calorimete...
A heat engine is a device that converts part of heat absorbed into work. It extracts energy in the form of heat from a heat source and does useful work as it continuously repeats a thermodynamic cycle, discarding some heat to a heat sink. To convert h
i. The heat energy required to change substance from one state to another at constant temperature is called as latent heat of substance. ii. When latent heat is given off, the bonding between atoms or molecules of a substance strengthens, causing trans
What is the heat capacity of a gold ring that has a mass of7.00g? Specific heat: The specific heat of a substance is the amount of heat required to raise the temperature of the unit mass of the substance through a unit charge degree(1∘or1K). ...
5 (a) State what is meant by the specific latent heat of fusion (melting) of a substance..[2](b)Ice cubes of total mass 70g, and at 0 C, are put into a drink of lemonade of mass 300g.All the ice melts as 23500J of thermal energy transfers from the lemonade to the ice. The...
Constant A quantity assumed to have a fixed value in a specified mathematical context. Sustained (of an electric arc) continuous; Heat transfer to the anode in free burning arcs Constant An experimental or theoretical condition, factor, or quantity that does not vary or that is regarded as inva...