(a)
Interpretation:
The conversion of kinetic energy into potential energy or the vice versa in the given process has to be determined.
Concept introduction:
Energy:
Energy is the capacity to do work, and can neither be created nor destroyed. Generally,
Types of energy:
Kinetic energy is the energy associated with motion. Thermal energy, mechanical energy, electrical energy, and acoustic energy are categorized in kinetic energy.
Potential energy is the energy results from an object’s position or state. Gravitational energy, chemical energy, and electrostatic energy are categorized in potential energy.
(b)
Interpretation:
The conversion of kinetic energy into potential energy or the vice versa in the given has to be determined.
Concept introduction:
Energy:
Energy is the capacity to do work, and can neither be created nor destroyed. Generally, chemical reaction almost always either release or absorb energy.
Types of energy:
Kinetic energy is the energy associated with motion. Thermal energy, mechanical energy, electrical energy, and acoustic energy are categorized in kinetic energy.
Potential energy is the energy results from an object’s position or state. Gravitational energy, chemical energy, and electrostatic energy are categorized in potential energy.
(c)
Interpretation:
The conversion of kinetic energy into potential energy or the vice versa in the given has to be determined.
Concept introduction:
Energy:
Energy is the capacity to do work, and can neither be created nor destroyed. Generally, chemical reaction almost always either release or absorb energy.
Types of energy:
Kinetic energy is the energy associated with motion. Thermal energy, mechanical energy, electrical energy, and acoustic energy are categorized in kinetic energy.
Potential energy is the energy results from an object’s position or state. Gravitational energy, chemical energy, and electrostatic energy are categorized in potential energy.
(d)
Interpretation:
The conversion of kinetic energy into potential energy or the vice versa in the given has to be determined.
Concept introduction:
Energy:
Energy is the capacity to do work, and can neither be created nor destroyed. Generally, chemical reaction almost always either release or absorb energy.
Types of energy:
Kinetic energy is the energy associated with motion. Thermal energy, mechanical energy, electrical energy, and acoustic energy are categorized in kinetic energy.
Potential energy is the energy results from an object’s position or state. Gravitational energy, chemical energy, and electrostatic energy are categorized in potential energy.
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Chapter 1 Solutions
Chemistry & Chemical Reactivity
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- A rebreathing gas mask contains potassium superoxide, KO2, which reacts with moisture in the breath to give oxygen. 4KO2(s)+2H2O(l)4KOH(s)+3O2(g) Estimate the grams of potassium superoxide required to supply a persons oxygen needs for one hour. Assume a person requires 1.00 102 kcal of energy for this time period. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 1.00 102 kcal of heat, calculate the amount of oxygen consumed and hence the amount of KO2 required. The ff0 for glucose(s) is 1273 kJ/mol.arrow_forwardA particulate-level illustration of the reaction AB+CDAD+CB is shown below. a Identify the reactants and products in this reaction. b Is the change shown chemical or physical? c Is the mass of the product particles less than, equal to, or greater than the mass of the reactant particles? d If the reaction takes place in a container that allows no energy to enter or leave, how does the total energy in the container after the reaction compare with the total energy in the container before the reaction?arrow_forward1-86 The specific heats of some elements at 25oC are as follows: aluminum = 0.215 cal/g · oC; carbon (graphite) = 0.170 caI/g oC; iron = 0.107 cal/g mercury = 0.033 1 caI/g oC. (a) Which element would require the smallest amount of heat to raise the temperature of 100 g of the element by 10oC? (b) If the same amount of heat needed to raise the temperature of 1 g of aluminum by 25oC were applied to 1 g of mercury, by how many degrees would its temperature be raised? (c) If a certain amount of heat is used to raise the temperature of 1.6 g of iron by 10oC, the temperature of 1 g of which element would also be raised by 10oC, using the same amount of heat?arrow_forward
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