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69.6 grams of ice initially at -5°C is added to 301 grams of liquid water initially at 39.1°C in a thermally insulated container. What is the temperature of the water once the contents of the container reach thermal equilibrium?
please help me answer these questions thank you inadvance1. when a 9.00 g sample of metal is heated to 100.0 c
Microwave ovens emit microwave energy with a wavelength of 12.0 cm. What is the energy of exactly one photon of this microwave radiation
Calculate the pH and the pOH of an aqueous solution that is 0.025 M in HCl(aq) and 0.055 M in HBr(aq) at 25°C.
the freezing point and boiling points of bromine br2 are -7.2degc and 58.8degc respectively. given that the heat of
What mass of this substance must evaporate in order to freeze 250 of water initially at 25? (The heat of fusion of water is 334 the specific heat of water is 4.18 .)
1. draw a six-carbon-chain portion from isotactic polypropylene in which all of the groups point in the same direction
When NO(g) reacts with H2(g) to form N2(g) and H2O(l), 376 kJ of energy are evolved for each mole of NO(g) that reacts. Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
A solution contains .10 M iodide ion, I- and 0.10 M carbonate ion, CO32-.... a. If solid Pb(NO3)2 is slowly added to the solution which salt will precipitate first, PbI2 or PbCO3? What will the concentration of the first ion that precipitates when..
What is the minimum (least negative) cathode potential (versus SHE) needed to electroplate silver onto cutlery in a solution of Ag+ and NH3 in which most of the silver ions are present as the complex Ag(NH3)2+, and the concentration of Ag+(aq) is ..
State the chemical reaction that took place in the patient's body. Identify the substance produced in the liver that helps catalyze this reaction
If 18.6 of 0.800 solution are needed to neutralize 5.00 of a household ammonia solution, what is the molar concentration of the ammonia?
explain the trends in melting points in going from the chloride to the flouride, making direct reference to the attractive forces that must be overcome to melt the solid and why their strength varies.
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