please answer chemistry multiple choice 1-8 no work needed The energy transferre
ID: 938634 • Letter: P
Question
please answer chemistry multiple choice 1-8 no work needed The energy transferred as the result of a temperature difference is defined as work heat potential energy kinetic energy temperature. Energy due to the motion of an object is called kinetic energy work potential energy. heat. mechanical energy For a process at constant pressure. Delta E = w and q = 0. Delta H = w Delta H = 0. In terms of the enthalpy of formation, which of the following compounds is most stable relative to its elements under standard conditions? PH_3(g), Delta H = +5.4 kJ/mol "The amount of heat required to raise the temperature of 1 mole of a substance by 1 degree C" is the definition of: Molar Heat Capacity Enthalpy Specific Heat Capacity Heat Capacity Calorimetry How much energy (q) is needed to change the temperature of 4 moles of water from of water from 15.0 degree C to 65.0 degree C? (C_P = 75.4 J/(mol degree C))? 5080 kJ 3770 kJ 3.77kJ "The most stable form of a substance at 1 atm pressure, at 25 degree C and 1 M concentration in solution" is the definition of: Standard state Molar gas volume Enthalpy State function Internal energy The first law of thermodynamics implies that the energy is transferred from the surroundings to the system during a combustion reaction. if a system docs work on the surroundings, then the surroundings must transfer an equal amount of energy to the system. if a system loses energy to the surroundings, then the surroundings must do an equal amount work on the system. the energy is transferred from the system to the surroundings during a combustion reaction the energy gained or lost by a system must equal the energy lost or gained by surroundingExplanation / Answer
1 ) B ) heat
2) A ) kinetic energy
3) E ) DH = qp
4) B) Fe3O4 : reason most negative enthalpy most stable to form
5) A ) molar heat capacity
6) D ) 15.08 kJ
Q = n Cp dT = 4 x 75.4 x (65-15) = 15080 J = 15.08 kJ
7) A) standard state
8) D)
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