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Describe what happens to the temperature, the volume, and the phase composition ( number of moles of liquid or vapor present) following the removal of 750 J of heat from 1 mol of pure water initially in each of the following states. Assume that the pressure is maintained constant at 1 atm throughout and that the gas behaves ideally
a) water vapor initially at 130 C
b) liquid water initially at 100 C
c) water vapor initially at 100 C
d) which of these three processes above involves the largest amount of work done on or by the system? what is the sign of w?
Rank each of the following measurements from smallest to largest
If 6.46 L of gaseous ethanol reacts with 16.1 L O2, what is the maximum volume of gaseous carbon dioxde produced
What is the pressure of the gas in this mercury manometer if h = 49 mm and atmospheric pressure
If 15 grams of copper(2) chloride react with 20grams of sodium nitrate, how much sodium chloride can be formed
It takes 49.0 J to raise the temperature of a 9.60 g piece of unknown metal from 13.0 degrees celsius to 24.5 degrees celsius. what is the specific heat for the metal?
Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by 14.2 torr at 35°C. The vapor pressure of pure ethanol at 35°C is 1.00 x102 torr.
NaOH to titrate 25.00 mL of an unknown acid solution to the equivalene point. What is the initial concentration of the acid?
Patiens suffering from repiratory disorders are often treared in oxygen tents in which the atmosphere is enriched in oxygen. What is the partial pressure of O2 in an oxygen tent consisting of 45% O2 for an atmospheric pressure of 753 mmHg?
monoprotic acid, has a pH=2.00. What is the value of the ionization constant, Ka for this acid?
Some KCl is dissolved in water at 25 degree Celsius, where it completely dissociates. The vapor pressure of pure water at 25 degree celsius is 28.3 mmHg.
how many grams of ammonium nirtate must have reacted if 3.75dm3 of nitrogen gas was collected over water at 26C and 97.8 kPa
Suppose that a sample of gas occupies 162 mL of volume at 25C and a pressure of 291 torr. What would be the volume if the pressure were changed to 503 torr at 25C? Answer in units of mL.
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