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An ice cube of mass 8.5g is added to a cup of coffee, whose temperature is 95 degrees Celcius and which contains 120 g of liquid. Presume the specific heat capacity of coffee is the same as that of water. Define the heat of fusion of the ice the heat associated with ice melting is 6.0 kJ/mol. Determine the temperature of the coffee after the ice melts.
It takes 55.0 J to raise the temperature of an 10.3 g piece of unknown metal from 13.0C to 24.7 C. What is the specific heat for the metal?
Solubility of calcite (CaCO3) will increase with a decrease in temperature and decrease with an increase in temperature. This is because the solubility of calcite is dependent on the solubility of CO2.
Calculate the pH of the solution which results from adding 38.54 mL of 0.1012 M KOH to the cyanic acid/cyanate buffer of the previous problem(*). You must show appropriate chemical equations for full credit.
Neutron diffraction is utilized in determining the structures of molecules. Compute the velocity of a neutron with a wavelength of 75 pm
an automobile gasoline tank holds 21 kg of gasoline. When gasoline burs, 81 kg of oxygen is consumed and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is produced?
how does the hammonds postulate explain?a. the greater selectivity for bromination vs. chlorination of an alkane?b. the
Define Protons can be accelerated to speeds near that of light in particle accelerators. Approximate the wavelength in (nm) of such a proton moving at 2.90x10^8 m/s(mass of proton=1.673x10^-27 kg)
The 0.200g of a compound containing C,H and O was combusted as well as produced 0.2998g of CO2 and 0.0819g of H2O. If the molecular mass of the compound was find out to be 176.30, explain what is the molecular formula for the compound
What volume of 0.150 mol /L Ba(OH)2 is needed to neutralise 476 mL of 0.178 mol/L HCl?
A flask contains 0.110 mol of liquid bromine, Br2. Determine the number of bromine molecules present in the flask.
At 46 oC a sample of ammonia gas exerts a pressure of 3.19 atm. What is the pressure when the volume of the gas is reduced to ONE-THIRD of the original value at the same temperature
Determine the empirical formula of each of the following compounds. (Type your answer using the format CH4 for CH4 and list the elements in the same order as they are mentioned in the problem.)
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