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How many mL of H2O should be added to 30 mL of a four Molarity solution to obtain a solution with a concentration of 0.200 Molarity?
bromothymol blue is a common acid-base indicator. it has a ka equal to 1.6 x 10-7. its unionized form is yellow and its
The density of methyl salicylate is 1.18 g/mL at 20 degrees Celsius. Determine the limiting reactant and explain why it is the limiting reactant.
The air in an inflated balloon (defined as the system) warms over a toaster and absorbs 121 J of heat. As it expands, it does 70. kJ of work. What is the change in internal energy for the system.
suppose that a 5.0X10^-5 M solution of Ba(OH)2 is prepared. What is the pH of the solution?
Calculate delta rG^o for the reaction below at 25 degrees C. CS2(g) + 3Cl2(g) -> S2Cl2(g) + CCl4(g) given delta rH^o = -231.1 kJ/mol-rxn and delta rS^o = -287.6 J/K*mol-rxn
Calculate the difference between its molar Gibbs energy and that of an ideal gas in the same state.
For a particular redox reaction MnO2 is oxidized to MnO4- and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in basic solution.
hfcs hydrofluorocarbons are replacing cfcs chlorofluorocarbons because the c-h and c-f bonds are stronger than c-cl
Identify the reaction as precipitation, acid-base, oxidation-reduction and/or gas forming. What is the concentration of the unknown solution
How many grams of NaOH are needed to neutralize 20.0 mL of 0.150 M H2SO4 solution? (b) How many liters of 0.500 M HCl(aq) are needed to react completely with 0.100 mol of Pb(NO3)2(aq)
A refrigeration system contains 575 ml of a gas at 22 degrees C and 1.25 atm. The gas is compressed until it has a pressure of 2.00 atm and a temperature of -6 degrees C. What is the new volume of the gas in the system
The molar heat capacities of iron and gold are 25.19 J/(mol c) and 25.41 j(mol c). what is the final temp of the water and the pieces of metal
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