A 15.9 g sample of aluminur be when 84.3 cal of heat are

Q: In a chemical cold pack, two substances are kept separateby a divider. When the divider is broken,…

A: In case of exothermic reaction heat is produced to the surroundings whereas in case of endothermic…

Q: How much heat is evolved

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: The specific heat of tin c

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Q: 21. Which of the following reactions releases most energy to the surroundings? *

A: l

Q: In the laboratory a student finds that it takes 173 Joules to increase the temperature of 11.1 grams…

A: Given heat is 173 j

Q: How is kinetic and potential energy differ?  How are they related?  Please citean everyday situation…

A: When an object is at rest the body is said to possess potential energy. in another case when the…

Q: A student mixed sodium carbonate and calcium chloride in a test tube. A white solid appeared…

A: Given reactant  Sodium carbonate  Calcium chloride Product  To be determined

Q: Given the specific heat of lead is 0.129 J/g.C and that it takes 93.4J of energy to heat a sample of…

A: Specific heat It is amount  of heat required to change the temperature of a substance by 1 Degree of…

Q: If it takes 37.0 cal of heat to raise the temperature of 12.0 g of a substance by 8.5 °C, what is…

A: The amount of heat required to raise the temperature of a substance through 1oC is known as the…

Q: d) Calculate the heat gained by the water (qwater) in the calorimeter (in J) using the equation,…

A: Specific heat capacity is defined as the amount of heat required to raise the temperature of 1…

Q: A sample of water with a mass of 23.31 g and an initial temperature of 367.67 K   loses 8615 Joules.…

A:

Q: How many joules are required to heat 150 grams of liquid water from 0° to 100° C?

A: The amount of heat absorbed (or released) by fixed amount of a substance to change its temperature…

Q: In the laboratory a student finds that it takes 49.2 Joules to increase the temperature of 14.8…

A:

Q: what is ΔHcond for this substance?

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Q: heat is typically measured in .c .f .joules .grams

A: The form of energy which is transferred between the systemns having different temperatures is known…

Q: How much heat is released whne 233 grams of water at room temperature (25 degrees C) is frozen into…

A: Specific heat capacity of water (c) = 4.184 J/g°C Initial temperature (T1) = 25°C  Final temperature…

Q: How much heat energy in joules is gained by water with a mass of 491 g, and a temperature change of…

A:

Q: It takes 1250 J of energy to heat a certain sample of pure silver from 12.0 °C to 15.2 °C .…

A: Given: Mass of silver=? g Temperature change, ∆T=(15.2-12.0)°C=3.2 °C The ennergy needed, q =1250 J…

Q: Are the combustion reactions of oxygen exothermic or endothermic? Support that answer with the…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: KMNO4, -OH HO. C H3O+, heat H,SO4

A: We have given the organic reaction and we have to find the major product and the mechanism of the…

Q: A home swimming pool contains 15 m3 of water. At the beginning of the swimming season, the water…

A: Volume of water = 15 m3Density of water = 1000 kg/m3Mass of water = volume x density = (15 m3) x…

Q: Material Specific heat (J/g°C) wool felt 1.38 cotton 1.33 раper 1.33 rubber 3.65 silicon rubber 1.46…

A: From given data  mass (m)= 99.3 gram  change in temperature (∆T)= 15.3 °F  Furthermore, specific…

Q: What would happen to an objects potential energy as it begins moving?

A: Ans -potential energy would disappear  reason; potential energy  of an object  is being transferred…

Q: Draw a graph of the "Potential Energy" fo

A: P.E increases when no change in temperature is noticed. K.E increases when there is increase in…

Q: If 57 J of heat are added to an aluminum can with a mass of 17.1 g, what is it's temperature change

A: Given information:Mass of aluminum (m) = 17.1 gAmount of heat (q) = 57 J

Q: es the energy change AH c

A:

Q: What happens to the temperature of a material as it undergoes an endothermic phase change? If heat…

A: Endothermic process: A process in that heat is absorbed by the system is called as endothermic…

Q: What is the heat change when a 26.8 g sample of water [Cwater = 4.184 J/(g°C)] is cooled from 75.6°C…

A: The heat change can be calculated using the equation,

Q: How do you calculate the gain in mass of water thats being heated when you know the energy?

A: Heat capacity of any given substance is defined as quantity of heat essential to alter the…

Q: [Review Topics] [Reférences] Use the References to access important values if needed for this…

A:

Q: The heat equation, as given in the introduction, can also be rearranged to calculate the mass or…

A: We know that the heat equation is given by formula: Q = m*C*∆T   where Q is the heat transfer(in…

Q: Objects can possess energy as (a) endothermic energy (b) potential energy (c) kinetic energy O a…

A: Here two form of energy possessed by objects that is potential energy and kinetic energy while…

Q: Which has the greater kinetic energy, Object 1 with a mass of 2.9 kg and a velocity of 0.71 m/s or…

A: Kinetic energy for any substance is calculated as let us consider an object with mass mand velocity…

Q: When heated, the temperature of a water sample increased from 15°C to 39°C. It absorbed 4300 joules…

A:

Q: What is the specific heat of silver? Express your answer with the appropriate units.

A: The specific heat is the amount of heat per unit mass required to raise the temperature by one…

Q: /hich of the following is an exothermic process?

A: Exothermic reactions are those in which energy is released and endothermic reaction are those in…

Q: When 435 Joules of heat is addesd to 3.4 grams of olie oil at 21°C, its temperature increases to…

A: Q=mC∆T Where,     Q= amount of heat (J)    m = mass of…

Q: How many joules of heat are lost b A 400 g of substance as it cools from 50.5 C to -10.5°C? The…

A:

Q: ΔHcond

A:

Q: Which of the following equations is a mathematical definition of enthalpy? Ο ΔΗ- ΔΕ-ΡAV Ο ΔΗ-ΔΕ +…

A: Amount or quantity of heat absorbed or released during a thermodynamic process at a fixed value of…

Q: Calculate the amount of heat needed

A: Given :- mass of acetic acid = 115 g                initial temperature = 33.9 °C  To be calculated…

Q: A sample of solid silicon is heated with an electrical coil. If 162 Joules of energy are added to a…

A:

Q: The enthalpy change when an electron is added to 1 mole of gaseous atoms is nknown as that elements

A:

Q: __________ is defined as energy and ______________ is how this energy is measured. a.…

A: Heat, also referred to as heat energy or thermal energy is a form of energy which is transferred…

Q: At a given temperature, for which of these gases: H2(g); O2(g) is: a) the average speed less? b) the…

A: Given, H2 and O2 gas

Q: Chemical potential energy and simply potential energy differ because its stored energy: (select all…

A: Energy is a thermodynamic quantity that indicates the capacity to do work. There are two major types…

Q: What is a theoret yeild and how do you find it?

A: Consider the hypothetical reaction, shown below where n represent the number of moles of chemical…

Q: What is heat capacity?

A: Heat capacity is a physical property of matter, defined as the amount of heat needed to be supplied…

Q: energy, in J, is

A: