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An average adult inhales a volume of 0.50 l of air with each breath. if the air is warmed from room temperature (20c) to body temperature (37c) while in the lungs. what will the volume of exhale air be?
Standard Enthalpies of Formation: acetic and AB2 = - 25.65 kCal/ mole,A++ = -8.65 k Cal/ mole,Temperature = 10 Degree Celsius determine pK,
NiCl2(aq)+ 2NaOH(aq)---> Ni(OH)2(s)+ 2NaCl(aq) how many grams of Ni(OH)2 are produced from the reaction of 35.0 mL of a 1.75M NaOH solution and excess of NiCl2.
Calculate the amount of of cobalt(II) nitrate hexahydrate [Co(NO3)2*6H2O] needed to prepare 50 mL of a .15 M cobalt(II) nitrate stock solution.
An aerosol spray can with a volume of 350 mL contains 3.2 g of propane gas (C3H8) as propellant. What is the pressure (in atmospheres) of gas in the can at 65oC?
What scientific principle or law is used in the process of balancing chemical equations. Define the terms limiting reactant and excess reactant.
The lid is tightly sealed on an empty 2.0L soda bottle at 25.0 degrees Celsius and 732 mm Hg. If the bottle is heated to 100.0 degrees Celsius, what is the pressure in the bottle?
Qualitative Approach: How is the solubility of CaF2 in water different from its solubility in Ca(NO3)2? Is CAF2 more or less soluble in water than Ca(NO3)2?
The temperature is held at 271 K. Calculate the work done by the gas(in joules). to give the appropriate sign
The amount of energy needed to heat 2.00 g of carbon from 50.0°C to 80.0°C is 42.6 J. The specific heat capacity of this sample of carbon is ?
a beaker containing 250g of water is heated from 23 degrees C to 100 degrees C. what is the heat gain in calories?
Calculate the amount of work in kilojoules (kj) needed to move an object that weighs 500 grams through a distance
the average european woman consumes food with energy content of 7525kj. what is the daily intake in kilocalories or food calories
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