Chemistry (13th Edition)
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A student in her dorm room can exchange mass (in ... more
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; The change in internal energy () is calculated ... more
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The sign of is positive for both the cylinders. ... more
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; To compute the change in the volume, subtract ... more
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; The change in the internal energy () is ... more
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; The molar mass of P4 is . The given chemical ... more
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; Based on the given chemical equation, of CO ... more
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The difference between and is expressed as, ... more
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; The molar mass of C3H8 is . From the given ... more
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; From the given reaction, it is known that one ... more
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; The change in temperature is .The initial () ... more
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; In a bomb calorimeter, there is no heat lost ... more
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; A constant pressure calorimeter is an isolated ... more
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; The balanced equation for the given reaction is... more
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The equation to calculate heat () change is , ... more
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; The change in temperature is calculated by .The... more
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; The heat gained () by water is given by , and... more
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; To synthesize of carbon disulfide (CS2), one ... more
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; The balanced equation for the combustion ... more
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Nitrogen exists in its most stable form as a ... more
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A reaction involving reactants with more positive ... more
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; The standard enthalpies for , , , and are 0... more
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; The enthalpy of formation of is not calculated... more
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; The standard enthalpies for the formation of... more
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A system is the specific part of the universe ... more
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Heat is the exchange of the thermal energy between... more
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The units for energy are J, cal, ev, ; The units ... more
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The law of conservation of energy is not violated ... more
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Combustion reactions/exothermic reactions can ... more
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Thermochemistry is the study of the heat energy in... more
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Law of conservation of energy ; It is based on the... more
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Two examples of exothermic reactions:(a) ... more
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Decomposition reactions are endothermic in nature ... more
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Law of conservation of energy ; According to the ... more
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State function is a function for a system that ... more
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For the first and second reactions, the system ... more
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; The change in internal energy () is computed ... more
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; The change in internal energy () is computed ... more
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; In the given chemical reaction, of tin reacts ... more
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; Convert temperature into Kelvin (K). ; From ... more
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Enthalpy is defined as the sum of the internal ... more
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To predict the change in enthalpy of the chemical ... more
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Exothermic reaction ; The given value for the ... more
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; In the reaction, of reacts with of . The ... more
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; The molar mass of NO2 is . The given mass of ... more
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; During this reaction, of hydrogen and of ... more
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; The work done by a gas against an external ... more
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The specific heat () of a substance is defined as ... more
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Calorimetry is the process of measuring the heat ... more
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Heat flow does not depend on the specific heat ... more
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; The mass () of the given pieces of silver is . ... more
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; The change in temperature () is written as, ... more
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; The change in temperature () is written as , ... more
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; The heat changed by the gold metal is expressed... more
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; The amount of heat released from Al is .The ... more
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; The heat absorbed by a constant-volume ... more
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; The balanced equation for the reaction between ... more
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; The standard state conditions are the accepted ... more
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The standard enthalpy of any element is zero in ... more
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The standard enthalpy of a reaction is defined as ... more
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The standard enthalpy of a reaction is the change ... more
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Hess's law states that the total change in the ... more
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Summing the enthalpies of the individual reactions... more
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, , ; The standard and pure state of sodium metal ... more
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; The most stable allotrope of any element in the... more
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; Conversion of water into water vapour requires ... more
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The overall for the decomposition of is more ... more
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Use the standard enthalpies of and to calculate ... more
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; The given equation is, The standard enthalpies ... more
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; The standard change in enthalpy of the given ... more
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; , where and are the stoichiometric ... more
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; The change in standard enthalpy can be measured... more
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; For the specified mass of ammonia to be ... more
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; For the decomposition reaction of calcium ... more
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; Monoclinic sulfur is on the product side, ... more
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; Multiply the first equation by 2.Multiply the ... more
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; Reversing the first equation, equation (i) is ... more
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; The first equation given is.The second equation... more
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The amount of heat released during the dissolution... more
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Lattice energy is an endothermic process.Hydration... more
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Compound A ; Lattice energy is the minimum amount ... more
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Magnesium ion ; A magnesium ion has more positive ... more
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The energies associated are the heat of solution, ... more
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It leads to an exothermic reaction. ; Upon the ... more
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Helium exists as a monatomic molecule in the ... more
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; It is known that the work done is a product of ... more
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Nuclear reactions are not stable. ; The idea of ... more
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; Although the first equation is given by, , the ... more
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; For the given reaction, the standard change in ... more
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; When hydrochloric acid reacts with barium ... more
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; The total amount of heat liberated is given by... more
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The value of w= 4.957 kJ and ; From the given ... more
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; For the reaction , find the enthalpy of the ... more
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Zero ; A change in enthalpy is a state function, ... more
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; When sodium metal is dissolved in water, it ... more
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; Upon halving and reversing the first equation,... more
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; To find the total number of moles in the system... more
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; When barium reacts with oxygen, it follows the ... more
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; For the given reaction, ; more
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; The heat change of a system is zero in a ... more
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; Enthalpy of reaction or heat of reaction is the... more
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The first reaction is an exothermic reaction and ... more
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Yes, methane should be preferred over water gas as... more
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Volume= ; For the combustion of Octane,From the ... more
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; For the combustion of Octane,From the standard ... more
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; For the combustion of ethane, ; The energy ... more
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Blank answer ; Blank answer ; Blank answer ; Blank... more
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Molar heat of vaporization of liquid Nitrogen is... more
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Heat is absorbed from the body by liquid ethanol ... more
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(S, rhombic)= 0(H2 g)=0Since they are in most ... more
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-0.162 J ; In order to findout the total workdone... more
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; Enthalpy of formation is the change of enthalpy... more
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; The enthalpy for the reaction, ; more
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; For the reaction , the enthalpy of formation is... more
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; When a mole of water evaporates, it liberates ... more
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; The approximate volume of water in the Pacific ... more
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; It is known that the molar mass of carbon ... more
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; The heat that is lost during the reaction is ... more
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; For the combustion of methane gas,The enthalpy ... more
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; For the given reaction, the enthalpy for the ... more
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; As the dimensions of the room are provided, the... more
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; The reaction of acetylene with two moles of ... more
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; Heat of formation of{Fe(OH)3 , Fe3+ and OH- are... more
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; In a calorimeter, the heat can neither enter ... more
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The statement is justified because the kinetic ... more
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The specific heat of water is more than air. Thus... more
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Oxygen, being in its most stable elemental form, ... more
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; The energy received from milk is the product of... more
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This law is not applicable for the mercury (Hg) as... more
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; For the combustion of ethanol, The enthalpy of ... more
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; For the combustion reaction of acetylene, the ... more
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; Logically, the heat gained by ice must equal ... more
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Paraffin vapor ignites and the flame moves toward ... more
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; Ammonium chloride decomposes according to the ... more
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; For the combustion of methane, the reaction can... more
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; ; For a mole of an ideal gas, the internal ... more
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The breaking of bonds requires energy, whereas the... more
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The specific heat capacity of water is higher than... more
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; The molar mass of naphthalene is . As the heat ... more
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Both reactions are exothermic in nature and can ... more
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; For the formation of water, . As two moles of ... more
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; For the combustion of glucose, the reaction is ... more
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q w ... more
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CH ; For the combustion of a hydrocarbon, the ... more
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The amount of water being precipitated is found to... more
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; The heat of a solution is given by the equation... more
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; Yes. ; From point A to B, there is no change in ... more
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; The change in enthalpy of a system equals the ... more
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The first example is exothermic.The second example... more
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; In a calorimeter, no heat enters or leaves the ... more
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No appreciable change in volume. ; The change in ... more
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; The potential energy of a body is given by the ... more
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Yes ; The kinetic energy of a tennis ball, moving ... more
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No ; The total volume of water in the ocean is ... more
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; At first, cubic feet is to be converted into ... more
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; When octane undergoes combustion, it follows ... more
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The energy released by a gallon of octane and by a... more
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; When combustion of propane occurs in the ... more
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; Yes. ; When the tire is deflated, the pressure ... more
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The metal reamer caused the fire. The metal reamer... more