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Calculate the molarity of a solution made by dissolving 12.1 grams of Na2CrO4 in enough water to form exactly 590 mL of solution.
a 40 gram sample of water at 25 degrees celcius absorbs 500 joules of energy. what is the final temperature of the water? the specific heat of water is 4.18 joules/g degrees C.
what is the net ionic equation potassium hydroxide and iron(III) nitrate.
find the total heat released by the reaction of 100.0 mL of 0.8500M NaOH and 100.0 mL of 0.8404M acetic acid.
derive the rate equation for the formation of the double helix and express the observed rate constant
The temperature risese to 19.1 degrees celsius. Neglecting the heat capacity of the container, what is the specific heat of metal? The specific heat of H2O (l) is 4.18 J/(g*C)
Question- Carbonate buffers are important in regulating PH of blood at 7.40. What is the concentration of CO2 in a 0.200M NaHCO3 at PH=7.40
Explain what is the pH of a 0.1M KAl (SO4)2 solution. Same. For 0.1M NaC2H3O2, 0.1M NH4Cl, 0.1M ZnCl2, 0.1MNa2HPO4.
A certain reaction has an enthalpy of H = 49 kJ and an activation energy of Ea = 71 kJ. Explain what is the activation energy of the reverse reaction
Calculate the change in internal energy of the gas in each case of these processes.
Draw the structure of camphor and show which C-C bond must be broken to form the unwanted by-product
An empty flask has a mass of 123.4 g. When the flask is filled with water, the mass is 211.6 g. If 10.0 g of zinc (d = 7.14 g/cm3) are added to the flask filled with water (and the sides of the flask are dried from the displaced water) what is the..
the density of liquid water at 0 degrees c is 0.9987 gcm cubed the density of ice at this same temperature is 0.917 gcm
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