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When an ice cube is dropped into a Styrofoam cup containing 195 g of coffee at 97.0 oC, the thermal energy used to melt the ice is 2.1 kJ what is the final temperature of the coffee closest to ? (Assume a specific heat of 4.184 J/g oC for the coffee)
The conductivity of KCl is given as kappa=1.413ohms^-1 m^1 and the conductance of this solution is given as 1408microSiemens.
10.08g of potassium chlorate, KClO3 is heated to decomposition according to the following equation. How many grams of O2 gas will be produced?
What is the maximum concentration of Mg2+ ion that can remain dissolved in a solution that contains 0.7719 M NH3 and 0.3031 M NH4Cl?
when a mixture at 273 K is heated to 473 K, how many different chemical changes occur? How many physical changes occur?
In May 1990 the French TGV train traveled the distance from Paris to Lille, France (127 miles) in .819 hours. What was the speed of the TGV in m/s?
What is the concentration of an unknown water sample if the assumed resistance is 650ohms?
Describe the role of biotin in the gluconeogenic pathway. What effect would biotin deficiency have on a person, and how might you overcome or avoid that effect?
milk is pasteurised when heated to 63 C for 30 minutes, but if it is heated to 74 C it takes only 15 seconds for the same result. Find the activation energy for this sterilisation process
Suppose that the solvent ethanol could serve to replace the methanol in this process, but at the expense of double the concentrations of the solvent in the atmosphere.
A laser pulse with wavelength 540nm contains 4.40mJ of energy. How many photons are in the laser pulse?
A chemical plant produces an ammonia-rich waste gas that cannot be released as-is into the environment. One method to reduce the ammonia concentration in the waste gas is to bubble the waste gas through a liquid solvent.
what are the various parameters that can be changed performing MASCOT. how could them affects probability score, any one know about this
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