What will the temperature of the room be in an hour
If a refrigerator door is left open in a room where the temperature is 30 degress C, assuming the room is perfectly insulated, and the refrigerator temperature is set at 10 degree C what will the temperature of the room be in an hour?
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A sample of hydrogen gas wascollected over water at 36.0 °C and 862 mmHg. The volume of the flask was 9.50 L. Calculate the number of moles of H2 collected. (Vapor pressure of water at 36.0 °C is 44.6 torr?
3 energy levels designated E9A), E(B), and E(C). The wavelength of the radiation emitted from the transitionE(C)-->E(A) is 500 nm. The wave length of the radiation emitted from transition E(B)-->E(A) is 600 nm.
In the Lewis structure ofHOCH2CH2OH, how many valence electrons need to be shown and how many pairs of electrons are bonding and how many are non-bonding?
A transformer has 1200 turns in the primary coil and 140 turns in the secondary coil. If the primary coil is connected to a 120 V outlet and draws 6.0×10-2 A , what are the voltage and current of the secondary?
Biochemist have discovered more than 400 mutant varieties of hemoglobin, the blood protein that carries oxygen throughout the body. A physician studying a variety associated with a fataldisease first finds its molar mass.
What is the peak current through the resistor if the emf frequency is 100 kHz ? Express your answer using two significant figures.
A density function sometimes used by engineers to model lengths of life of electronic components is the Rayleigh density, given by:
Assuming that the star has radiated at this same rate for its entire lifetime of 4.8 x 10^9 y, and that its current mass is 1.7 x 10^30 kg, what percentage of its original mass has been converted to energy?
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