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Chemistry 102 Q&A Archive of February 15, 2022

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February 15 of 2022

A refrigerator is used to cool 4litres of soft drink from room temperature 23°C to 4°C if the density of the soft drink is 1015kg/m^3.how much heat must be removed if the specific heat of the soft drink is 4350j/kg°C
Calcium is determined in serum by microtitration with EDTA. A 100-?L sample is treated with two drops of 2 M KOH, Cal-Red indicator is added, and the titration is performed with 0.00122 M EDTA, using a microburet. If 0.203 mL EDTA is required for titration, what is the level of calcium in the…
Calculate the Freezing Point Depression (DT) for the following solution. (Assume the density of water is 1.00 g/mL and Kf = 1.86 Deg C/m)2.6 M NaCl (Assume the density of the solution is 1.00 g/mL.)
For a hydrogen atom, calculate the wavelength of light (in m) that would be emitted for the orbital transition of n(initial) = 5 to n(final) = 1. Submit an answer to four significant figures. The Rydberg constant is 1.09678 x 10? m?¹.
What would be the proper name for the following binary ionic compound CaBr2?
This reaction is first order in \( \mathrm{N}_{2} \mathrm{O}_{5} \) : \[ \mathrm{N}_{2} \mathrm{O}_{5}(g) \longrightarrow \mathrm{NO}_{3}(g)+\mathrm{NO}_{2}(g) \] The rate constant for the reaction at a certain temperature is \( 0.053 / \mathrm{s} \). a. Calculate the rate of the reaction when…
A refrigerator is used to cool 4litres of soft drink from room temperature 23°C to 4°C if the density of the soft drink is 1015kg/m^3.how much heat must be removed if the specific heat of the soft drink is 4350j/kg°C
Calculate the Freezing Point Depression (DT) for the following solution. (Assume the density of water is 1.00 g/mL and Kf = 1.86 Deg C/m)2.6 M NaCl (Assume the density of the solution is 1.00 g/mL.)
For a hydrogen atom, calculate the wavelength of light (in m) that would be emitted for the orbital transition of n(initial) = 5 to n(final) = 1. Submit an answer to four significant figures. The Rydberg constant is 1.09678 x 10? m?¹.
What would be the proper name for the following binary ionic compound CaBr2?