Calculate the amount of heat required to heat
Calculate the amount of heat required to heat a 3.9 gold bar from 27 to 69
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How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.800 it M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.99? Kb for ammonia is 1.8*10^{-5}.
What is the main overall driving force for any spontaneous reaction or change?
What is the expected freezing point of a 0.50 m solution of Li2SO4 in water? Kf for water is 1.86°C/m.
A very dilute solution contains 116 mg of fructose (M=180.16 g/mol) in 1.00 liters of solution. It is placed in a semipermeable membrane bladder, which is then suspended by a support in some pure water. What osmotic pressure would develop across t
In photosynthesis, plants use energy from the sun in combination with carbon dioxide and water to form glucose (C6H12O6) and oxygen.
Calculate the theoretical yield of when 108 g of C2H5Cl reacts with 236 g of , assuming that and react only to form C2H5Cl and HCl
A solution is prepared by mixing 55.0 mL of 0.015 M BaCl2 and 150. mL of 0.045 M K2SO4. What are the concentrations of barium and sulfate ions in this solution?
A system absorbs 192 kj of heat and the surroundings do 110 kj of work on the system. what is the change in internal energy of the system?
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How does a country gain "power" within the international system? Provide two specific examples to support your response.
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