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A 2.00 mol sample of helium gas initially at STP is converted to a volume of 5.0 L and a temperature of 27degrees celsius. What is its new pressure in atmospheres?
explain why one would be higher than the other? I'm confused as to the theory of this lab and need to know exactly why...Thanks! I have this lab next week and can't unnderstand what the concept is.
Delta G for reaction 2C+O2-> 2CO is -280kj. Delta G for reaction 2Zn+O2-> 2ZnO is -640kj. What is Delta G for the reduction of zinc oxide by carbon?
The vibrational parameters for H35Cl are frequency = 2990.95 cm-1 and vxe = 52.819 cm- 1. Calculate the 35Cl to 37Cl isotope shift for the v=1-0 vibrational interval for both HCl and DCl. Can you explain why one is larger than the other
If aqueous solutions of Na2SO4 and BaCl2 are mixed, a white precipitate forms. What is the identity of the precipitate
Suppose Aniline (MW93 g/mol) co-distills with water 98.2 C then the vapor pressure of water at 98.2 C is 717 mmHg. It is required to isolate 10 g of aniline. Define what is the minimum volume of water needed to isolate 10 g of aniline in a steam ..
Mecury has mp= -38.9 C, a molar heat capacity of 27.9J/(K.mol) for the solid, and heat of fusion =2.33kJ/mol. assuming that the heat capacities dont change with temperature, how much energy (in kJ) is needed to heat 7.5g of Hg from a temperature o..
you are given the following free energy data in kcalmol for 25 degrees c and 1 bar total pressure. see belowspecies
You have 277 mL of 1.25M potassium chloride solution, but you need to make a 0.50M potassium chloride solution. how many mL of water must you add to the original 1.25M solution to make the 0.50M potassium chloride solutuion
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?
the vapor pressure of an unknown compound at 25 degrees c is 94.6 torr and its enthalpy of vaporization is 30811 jmol.
If it takes 52 J of energy to warm 7.40g of water by 17°C, how much energy would be needed to warm 7.40g of water by 55 °C
A stream of air enters a 7.50-cm ID pipe at a velocity of 60m/s at 27C and 1.80 bar (gauge). At a point downstream, the air flows through a 5.00 cm ID pipe at 60C and 1.53 bar (gauge). What is the velocity of the gas at this point
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