Calculate the amount of heat needed to boil
Calculate the amount of heat needed to boil 50.6g of ethanol (CH3CH3OH), beginning from a temperature of 24.4C . Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol
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A pn-junction is uniformly doped and has dopant concentration of NA = 4 x10^16 cm^-3 in the p-region at 300K. At zero bias, 20% of the total space charge region (W) is extended in the p-region.Calculate Vbi, ND, W, xn and xp. Given that ni = 1.8 x
If you had a saturated solution of NaNo3 at 40 degrees Celsius that contained 85 grams of water, how much of the salt would you need to add to have a saturated solution at 70 degrees Celsius?
Water boils at 373 K.The molar enthalpy of vaporation for water is 40,7 kJ/mo1.If one mole of water is at 373 K when it starts to boil its temperature when it all has boiled will be?
Calculate the mass of propylene glycol that must be added to .360 kg of water to reduce the vapor pressure by 2.87 torr at 40 degrees celsius (Ph20 at 40 degrees = 55.3)
A full revolution press has 100 rpm flywheel rotation. The press is equipped with tow hand trip devices mounted on the machine at a distance of 20 inches from the point of operation.
If a bottle of nail polish remover contains 172mL of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788g/mL .
A gas-filled balloon having a volume of 2.50 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the
An aqueous solution of a nonelectrolyte boils at 100.32C. What is its expected freezing point?
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A Streptococcus pneumoniae mutant does not produce a capsule. What will be the most likely result of this mutation if the bacteria infect a host?
Which of the following describes why the secondary immune response is much quicker and greater than the primary response to the same antigen
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