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A 39 L tank contains a gas under a pressure of 186 atm. What volume would the gas occupy at the same temperature at 550 torr of pressure?
At 25 degrees C, the standard enthalpy of formation of KCl(s) is -435.87 kJ/mol. When one moles of KCl(s) is formed by reacting potassium vapor and chlorine gas at 25 degrees C, the standard enthalpy of reaction is -525.86 kJ/mol.
A 2.01 g sample of a salt dissolves in 9.10 g of water to give a saturated solution at 25°C. What is the solubility (in g salt/100 g of H2O) of the salt?
calculate the new temperature in Celcius- tank of helium gas with a pressure of 270 torr at 4 degrees celcius is heated to give a pressure of 1500 torr
If every tablet in the problem abouveweights 650 mg. How many kilograms of excipient (lactose/talcum powder/filler) are needed to complete the whole batch?
Write the equation showing the S-trans to S-cis equilibrium of the two conformations for a. (E)-1,3-pentadiene b. (Z)-1,3-pentadiene and which equilibrium will favor the s-tans conformation more strongly?
Most electrical energy in the United States is generated in large-scale power cycles through conversion of thermal energy to mechanical energy, which is then converted to electrical energy.
A 4 g sample of the hydrated crystal Ba(OH)2• χH2O is heated until all the water is removed. The remaining solid weighs 2.17 g. Calculate the formula of the hydrated crystal.
the equilibrium constant for a chemical transformation can be predicted from its stoichiometric coefficients whereas the rate law must be determined experimentally.
Explain why the addition of a small amount of base to an acidic buffer solution causes only a small change in the pH of the buffer solution.
When 0.60 grams of a molecular covalent compound is dissolved in 10 grams of water, the freezing point of the soludion is -1.86 C. Given that the freezing point of pure water is 0 C and that the freezing point depression constant for water is 1.85..
what is the mass of one mole of copper atoms? How many moles of copper atoms have a mass equal to the mass of a penny?
Calculate the standard emf for each of the following reactions:a)H2(g) + F2(g)---> 2H+(aq) + 2F-(aq)
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