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An ice cube of mass 9.0 g at temperature 0°C is added to a cup of coffee, whose temperature is 85 °C and which contains 120 g of liquid. Assume the specific heat capacity of the coffee is the same as that of water. The heat of fusion of ice (the heat associated with ice melting) is 6.0 kJ/mol. What is the final temperature of the coffee after the ice melts
It takes 585J of energy to raise the temp of 125.6g mercury from 20.0 degrees C to 53.5 degrees C. Calculate the specific heat capacity and the molar heat capacity of mercury
A solution containing sulfide ions is added to selectively precipitate one of the metal ions from solution. At what concentration of sulfide ion will a precipitate begin to form. What is the identity of the precipitate
Calculate the freezing point of a solution that contains 30.8 g of urea, CH4N2O (MW = 60.06 g/mol), in 196 g of water. Urea is a nonvolatile nonelectrolyte. Kf for H2O = 1.86°C/m.
What is the conjugate base of each of the above? d. Write the reaction for the conjugate base interacting with water. e. Write the Kb expressions for the reaction that involves the conjugate and calculate the actual value.
If 6.46 L of gaseous ethanol reacts with 16.1 L O2, what is the maximum volume of gaseous carbon dioxde produced
Show how to determine the correct amount of NaCl thath would be required to prepare solution - In addition show how to etermin the concetration of Na+ ions in solution.
a gas has a volume of 1.75 L at -23 degrees Celsius and 150 kPa at what temperature will the gas occupy 1.30 L at 210 kPa
When the stopper is removed from a partly filled bottle containing solid and liquid acetic acid at 16.7degrees C a strong vinagerable odor is noticeable immediately. How many acetic acid phases must be present in bottle. Explain.
What two ways could you use to determine which layer is the organic layer and which is aqueous layer
based on ion charges and relative ion sizes, rank these ionic compounds by their expected melting points SrO CsBr SrF2 RbF
Calculate the concentrations of all species in a 0.790 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
How much does energu it take to warm 250 gram of carbon disulfide from -20 C to 40 C? The materail remains liquid
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