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A 10.0 g piece of metal at 100 C is transferred to a calorimetercontaining 50.0 mL of water initially at 23.0 C. Calculate the specific heat capacity of the metal if the heat capacity of the calorimeter, Ccal is 25 J/K. The final temperature,Tfinal is 25.6 C
What are the odds of finding a particle in a one dimensional box between 0 and L/2, where L is the length of the box. Assume that the particle is in the second to lowest energy level (n = 2).
Explain which distilation method (fractional or simple) would be most appropriate to seperate hexanes and dichloromethane.
You measure 50,000 decays of a radioactive sample in 20 seconds. You measure the same sample 50 days later and observe only 10,000 decays in 20 seconds. What is the half life of the radioactivity
Hydrchloric acid is usually purchased in a concentrated form that is 37.0% HCL by mass and has a density of 1.20g/ml. How much concentrated solution would you take to prepare 2.85L of 0.410M HCl by mixing with water
when 16.8 j was added as heat to a particular ideal gas the volume of the gas changed from 42 cm3 to 87 cm3 while the
The first-order rate constant for the reaction of methyl chloride (CH3Cl) with water to produce methanol (CH3OH) and hydrochloric acid (HCl) is 3.32 10-10s-1 at 25°C. Calculate the rate constant at 38°C if the activation energy is 116 kJ/mol.
A sample consisting of 1.00 mol of a van der Waals gas is compressed from 20.0 dm^3 to 10.0 dm^3 at 300 K. In the process 20.2 kJ of work is done on the gas.
Determine the empirical formula, molar mass, and molecular formula of the compound. Assume that the compound is a nonelectrolyte. (Type your answer using the format CO2 for CO2.)
what volume of 0.200 m hno3 is needed to titrate 38.7 ml of 0.175 m naoh? 2 if 42.5l of 0.45 m hcl is titrated with
When 3.50 g of is added to 100.00 g of water in a container open to the atmosphere, the reaction shown below occurs and the temperature of the resulting solution rises from 22.00°C to 47.40°C.
Predict whether the following reactions will occur or not. For those that do occur complete and balance the equation. Write N.R. for those that do not occur. Include all subscripts (e.g., (S), (aq), etc.)
metallic aluminum reacts with mno2 at elevated temps to form manganese metal and alunimun oxide. a mixture of the two
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