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The specific heat capacity of mercury at 25°C is 1.400×10^-1 J/g/K. For a 8.25×10^2 g sample of mercury, how much energy is required to raise the temperature from 22.4°C to 29.4°C? (Assume that the heat capacity is constant over this temperature range.) PART B- What is the molar heat capacity of mercury?
How many grams of ammonia can be produced ? How much of the excess reactant is left over?
The cis and trans geometric isomers of a compound can have different chemical and physical properties. Draw the structure of the geometric isomer of 2-pentene that has the lower melting point
The half-lives of different radioisotopes are given in the table below. How long would it take (in minutes) for the amount of argon-44 to decrease from 28.0 mg to 3.50 mg?
A certain reaction with an activation energy of 185 kJ/mol was run at 485K and again at 505K. What is the ratio of f at the higher temperature to f at the lower temperature
If we wish to prepare a 0.50M solution of NaCl how much water must be added to 1.0 mole of NaCl?
Calculate the expected pH values of the buffer systems from the experiments (a, b, c, d) using the Henderson-Hasselbalch equation (pH= pKa + log [A-] ). Use for pKa values: carbonic acid= 6.37 and acetic acid= 4.75.
What is the molarity (M) of the concentrated HClO4 solution?
heated from 20 to 50 degrees Celsius. How many calories were needed to bring about the temperature change?
derivatives of butanoic acid, Indicate how a butanoic acid can be converted to an a) acid chloride; b) acid anhydride; c) an ethyl ester, and d) an N-methyl amide
Olympic cyclists fill their tires with helium to make them lighter. A cyclist filled her bicycle tire, which has a volume of 855 mL, to a pressure of 8.5 atm at 25 C with helium.
Draw all stereoisomers of 1,2,3-trimethylcyclopentane. Use bold and hashed wedges to show the stereochemistry.
Use the rydberg equation to calculate the wavelength in nm of the photon when an electron in a hydrogen atom undergoes a transition from n=6 to n=2
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