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Energy Calculation
Page 2
Questions (69)
How much energy (in kilojoules) is released when 29.0 g of ethanol vapor at 88.0 ∘C is cooled to -10.0 ∘C? Express your
2 answers
asked by
Brandon
582 views
Four charges are arranged at the corners of a regular tetrahedron (a pyramid with four sides that are identical equilateral
2 answers
asked by
Anonymous
575 views
An ammeter indicates the current for a toaster is 5.0 amps when the toaster is connected to 120-V circuit. How much energy is
6 answers
asked by
allexelle
533 views
A solar heating specialist is considering paraffin as a possible solar heat collector. How many kilograms of paraffin would be
3 answers
asked by
k
530 views
2.50 g of hydrogen gas is heated from 17.0 0C to 230C. The specific heat capacity of hydrogen is 14.267 J/g●0C. How much
1 answer
asked anonymously
29 views
A light photon with a frequency of at least 0.0373 × 1016 Hz is required to split apart diiodine according to the equation:
I2(g
2 answers
asked by
Kyle
525 views
A light photon with a frequency of at least 0.0906 �~ 1016 Hz is required to split apart hydrogen bromide according to the
2 answers
asked by
adriana
491 views
Calculate the cohesive energy of potassium iodide (KI). The ionic radii of K+ and I−, are 152 pm and 206 pm, respectively.
1 answer
asked by
walter white
487 views
For a certain reaction, Delta H(not) = -76.8 kj and delta S(not) = -217 j/k. If n =3, calculate E for the reaction at 25degrees
1 answer
asked by
Tara
479 views
It keeps saying I am wrong!
Am I doing the math incorrectly? Problem: Calculate the amount of energy released in kJ/mol for the
4 answers
asked by
Rach
455 views
An 8 hour exposure to a sound level of 95.0 dB may cause hearing damage. What energy in joules falls on a 0.850 cm diameter
1 answer
asked by
Justin
455 views
When sodium burns in air it produces a bright white light and heat energy
2Na + O2 2Na2O ?H = -414kJ/mol What would you expect to
1 answer
asked by
Timofey
464 views
Use Planck's equation (E=h \nu) to determine the energy, in kilojoules per mole, of radiation of frequency 4.00×1014s^{-1} .
1 answer
asked by
Chironjit
461 views
how far will 490 Joules raise a block weighing 7 newtons
1 answer
asked anonymously
38 views
Use the reaction equation and bond energies to answer the question.
2H2O ---> 2H2 + O2 H-O: 467 kJ / mol H-H: 432 kJ / mol O=O:
1 answer
asked anonymously
32 views
How much energy is released when 23.0 of ethylene reacts? Be sure your answer has the correct number of significant figures.
1 answer
asked anonymously
14 views
The sun generates about 4 times 10^26 joules of energy every second. There are about 3.15 times 10^7 seconds in a year. About
1 answer
asked anonymously
9 views
Calculate the energy of 2 starts of the cassiopeia constellation, using E equals MC squared
Round answers to the nearest hundred
1 answer
asked anonymously
7 views
if it takes 15 minutes to dry your hair with a 1.200 kW Hair dryer, how much energy is used in drying your hair?
1 answer
asked anonymously
7 views
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Parent Categories (32)
Atomic Physics
Atomic Spectroscopy
Chemical Bonding
Chemical Reactions
Chemistry
Combustion
Electric charges
Electric Field and Energy
Electricity
Electricity and Circuits
Electricity and Current
Electricity and Magnetism
Electromagnetic Radiation
Electromagnetism
Energy
Energy and Work
Heat and Thermodynamics
Heat Transfer
Kinetic Energy
Mechanics
Nuclear Physics
Nutrition
Physical Fitness and Nutrition
Physics
Power Plant
Quantum Mechanics
Reaction Energy
Reactions
Sound waves
Stoichiometry
Thermodynamics
Uranium Enrichment