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Two simple systems with constant V and N are brought into thermal contact. System 1 has a specific heat
\(C_{V} = C\)and an intitial temperature of\(T_{0}\)while system 2 has a specific heat\(C_{V}= 2C\)and an initial temperature of\(3T_{0}\). Assume that 1) the composite system forms a closed, isolated system; 2) the specific heats of both systems are temperature independent; 3) the process is quasistatic. Determine the following:
a) the final temperature of each system.
b) the change in energy of each system and also of the composite system.
c) the change in entropy of each system an also of the composite system.
2K(s)+2H2O(l)--> 2KOH(aq) + H2(g) A 5.00 g chunk of potassium is dropped into 1.00 kg water at 24 deg C. What is the final temperature of the water after the preceding reaction occur.
Molecular Formula of a Compound from Percent Composition and Molar Mass, What is the molecular formula of a compund that contains 42.87%carbon, 3.598% hydrogen, 25.00% nitrogen
the products formed are sodium bromide and hydrogen sulphite. Calculate the mass of sodium bromide produced.
How many molecules of carbon dioxide are produced when 129 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
How many moles of a monoprotic acid with a Ka=4.9x10^-6 must be dissolved in 750 ml of H2O to produce a solution with pH=4.50
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A volume of 95.0ml of h2o is initially at room temperature 22.0 C. A chilled steel rod at 2.00 *C.is placed in the water. If the final temperature of the system is 21.2 *C. what is the mass of the steel bar?
When a 7.00-g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of 2.734 kJ·K-1, the temperature decreases by 0.460 K.
determine how many grams of CaH 2 are required to generate 145 Litres of hydrogen gas if the pressure of hydrogen is 825 mm Hg at temperature of twenty one degree Celsius? .
Empirical and Molecular Formulae, The analysis of an organic compound produces the following elemental analysis: % C is 59.999% and % H is 4.476%.
How many protons are required to heat 200mL of coffee from 22 degrees Celsius and 64 degrees Celsius
How many calories of heat are necessary to raise the temperature of 350 ml of water from 1.00oC to 5.00oC.
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