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Question- In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the calorimeter is 23.0 degreesC. If 2.30g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution deltaHsoln of CaCl2 is -82.8 kJ/mol.
I just need a general explanation of it please- Thanks!
How many grams of Cu(OH)2 will precipitate when excess KOH solution is added to 63.0 mL of 0.610 M CuSO4 solution.
The initial DO of the mix is 9.0 mg/L. After 5 days, the DO is 4.0 mg/L. After a long period of time, the DO is 2.0 mg/L, and it no longer seems to be dropping. Assume nitrification has been inhibited so the only BOD being measured is carbonaceous..
Determine the equilibrium concentrations of the following: a. The cobalt ion concentration of a saturated solution of Cos b. The pH of a saturated Zn(OH)2 solution c. The lead (II) ion concentration of a saturated solution of PbCL2
Explain how one refers to specific frequencies of infrared radiation in determining this. An IR spectrograph of define what is pure isopentyl acetate and have to refer to specific infrared radiation frequencies
The specific heat of calcium metal is 0.653J/gK. How much heat, in joules, is required to heat a 58.5 gram sample of calcium from -5.2oC to 16.7oC. Enter your answer in scientific notation with no units.
a mixture of gases containing .20 mol of SO2 and .2 mol of O2 in a 2.0L flask reacts to form SO3. If the temperature is 25C, what is the pressure in the flask after reaction is complete?
carboxylic acids react with alcohols to form esters which are found in all plants and animals. what is the percent by mass of carbon in each of the following esters?
An aqueous potassium nitrate solution has a freezing point of -2.0 °C. How many moles of potassium nitrate are contained in 0.5 kg of water in this solution? The freezing point depression constant for water is -1.86 °C/m.
The methylamine hydrochloride dissociates completely in water to form methylammonium ion (CH3NH3+) and chloride ion.
Calculate the expectation value for the potential energy of the H atom with the electron in the 1s orbital. Compare your result with the total energy
The partial pressure of carbon dioxide is 675 mm Hg. If argon gas added to the mixture causes the total pressure to become 2410 torr, what is the partial pressure of argon? Report your answer in atm.
Problem- A young researcher set out to develop a method for quantifying the polycyclic aromatic hydrocarbon (PAH) content in a contaminated soil sample by gas chromatography
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