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A 13.8-g piece of zinc was heated to 98.8 oC in boiling water and then dropped into a beaker containing 45.0 g of water at 25.0 oC. When the water and metal come to thermal equilibrium, the temperature is 27.1 oC. What is the specific heat capacity of zinc?
Hydrogenation of carbon double bonds C=C (i.e. adding a hydrogen on each carbon atom and thus reducing the double bond into a single bond: H-C-C-H) is a very common process in organic and polymer chemistry.
In the following experiment, a coffee-cup calorimeter containing 100. \rm mL of \rm H_2O is used. The initial temperature of the calorimeter is 23.0
If a formic acid/formate buffer is 0.031 M in formic acid and has a pH of 3.91, what is the molar concentration of the formate ion? The pKa of formic acid is 3.75.
calculate the heat given off when 177 g of copper cools from 155.0 celsius to 23.0 celsius. the specific heat capacity
If 1.56g of a gas has a volume of 1.00 L at .984 atm and 50 degrees Celcius, what is the molar mass of the compound
calculate the ph values in 10.00 ml of the diprotic o-phtalic acid 0.100 m c6h4cooh2 to which the following volumes in
Determine what is the exact volume of the 250-mL Erlenmeyer flask express your answer (in mL)?
Calculate individual concentrations in an unknown mixture. Calculate the individual concentrations of C and of D in the following unknown mixture: Compound C: Absorbance at 365nm = 0.150 Absorbance at 470nm = 0.642 Concentration = 1.00 X 10^-4 Com..
the heat change value that you calculate from your experiments will be for the amount of material that you use in each reaction. how will you convert it to kJ/mol
Ethane and bromine react immediately after being irradiated with UV light. When irradiation stopped, the rate of reaction decreases, but the reaction does not stop immediately. Explain.
Solid potassium ,K , can be reacted with molecular oxygen , O2 to form K2O. If 4.3 g of potassium are reacted with 2 dm^3 of pure O2 at 20 degree celsius and 101.325 kPa what will be the mass and/or volumes of all substances present after the reac..
How many moles of Fe(NO3)3 are required to prepare a 354.6 mL solution that is 9.737 moles/liter of NO3-?
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