5. List the 3 things that energy (heat) required to change the temperature of a substance is dependent upon bollno atnuoma olooib

Q: How much heat is required to warm 1.70 kg of sand from 24.0 ∘C to 100.0 ∘C?

A: The amount of heat required to increase the temperature of sand is numerically expressed as ms∆T…

Q: A knowm amount of heat is transferred to a sample of aluminum and the aluminum raises its…

A: Heat transferred can be calculated using the following equation,

Q: Define The Nature of Energy?

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: How much heat ( in joules) does it take to heat 45.0 g of 23.0 C water until it is steam at 112.0 C?

A: Answer: Heat (in joule) = 117319.5 J

Q: Consider a cold can of soft drink on a table in a warm room.  If the cold can of soft drink is the…

A: According to the first law of thermodynamics, the energy of the universe remains constant. For a…

Q: mass

A:

Q: A 55.0kg sample of an unknown metal X requires 675kof energy to heat it from 25.0 to 118.0C. What is…

A: The mass of an unknown sample is 55.0 kg. The initial temperature is 25.0˚C. The final temperature…

Q: A gas is compressed from an initial volume of 5.55 L to a finalvolume of 1.22 L by an external…

A: The expression for the work done,  W=-P(Vf-Vi)W=-1.00 atm (1.22 L-5.55 L)W=4.33 L (101.33 J)1 L…

Q: You are studying a chemical reaction. That reaction (the system) loses heat to the surroundings. O…

A: Endothermic reactions are those reactions in which heat energy is absorbed from the surroundings and…

Q: 479.1 g sample of silicon dioxide undergoes a temperature change of -87.43 K while releasing 29447…

A: Heat absorbed/released, q = mCs∆T  m = mass of substance Cs = specific heat capacity of substance ∆T…

Q: sample of solid zinc is heated with an electrical coil. If 63.1 Joules of energy are added to a 10.1…

A: We will use formula of heat

Q: You assumed the inital temperature of the metal was the same as that of the boiling water. If the…

A: the initial temperature of the metal was the same as that of the boiling water. If the metal sample…

Q: A sample of water with a specific heat of 4.186 joules/gram is cooled from 45 degrees celsius to 25…

A: Given that, specific heat of water = 4.186 joules/(gram.oC) And the sample of water is cooled from…

Q: How much heat, in Cal, will be absorbed by a 25.0 g piece of aluminum (specific heat = 0.930…

A:

Q: How much heat is required to warm 1.50 kg of sand from 24.0 ∘C to 100.0 ∘C

A: Given: Mass of water = 1.5 kg = 1500 g Initial temperature (T1) = 24°C  Final temperature (T2) =…

Q: The energy absorbed by a certain system is -130 kj . If the system does 90kj of work on the…

A:

Q: -1 A certain reaction has an activation energy of 79.0 kJ/mol and a rate constant of 1.9 s¹ at 148.…

A: Activation energy (Ea) = 79.0 kJ/mol = 79.0×103 J/molTemperature (T1) = 148 °C = (148+273) K T1 =…

Q: In the laboratory a student finds that it takes 34.3 Joules to increase the temperature of 13.7…

A:

Q: The specific heat of aluminum is 0.214 cal/g·oC. Determine the energy, in calories, necessary to…

A: The specific heat of aluminium is = 0.214 cal/(g·oC) The mass of aluminium is = 55.5 g The increase…

Q: Why do some molecules have more chemical/potential energy than other molecules—what specifically…

A: The chemical or potential energy of a molecule is determined by the arrangement of its constituent…

Q: .The specific heat of ethyl alcohol is 2.45J / g°C and that of silver is 0.235J/g°c. Therefore,…

A:

Q: -1 1 A 28.0 g sample of brass, which has a specific heat capacity of 0.375 J.g .°℃ is dropped into…

A: The objective of this question is to calculate the equilibrium temperature of the water when a brass…

Q: To raise the temperature of 25.0 grams of these metals by 50°C... a. both metals require the same…

A: The metals given in question are Pb and Al. Both metals have same mass equal to 25.0 g. In order to…

Q: A solid state substance absorbs 5589kJ of energy. The mass of the substance is 0.774kg. Assuming the…

A:

Q: The specific heat capacities for several substances are shown in the table. Substance Specific Heat…

A: Given :-  Substance          specific heat (J/g°C)  Iron                        0.45 Air…

Q: A unknown metal is thought to be gold. When 2.8 J of heat are added to 5.6g of the metal its…

A: Heat given to the metal, Q =2.8 J Mass of metal taken, m =5.6 g Increase in temperature, ∆T = 1.72˚C…

Q: 6. Why can there never be a temperature less than 0 Kelvins? 7. How much heat is absorbed from a…

A: Given data,Mass of mercury=56.0g∆T=289K=289-273=16oCSpecific heat capacity of Hg=0.14J/goC

Q: 6. The temperature of a sample of iron with a mass of 10.0 g changed from 50.4°C to 25.0°C with the…

A:

Q: When a hot piece of copper touches a cold piece of copper, which direction will heat transfer and…

A: Thermodynamics is branch of science which deals with the study of relations between heat, energy,…

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.