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A chemist burns 0.8745 g of graphite (a form of carbon) in a new bomb calorimeter, and CO2 forms. If 393.5 kJ of heat is released per mole of graphite and T increases 2.613 K, what is the heat capacity of the bomb calorimeter?
The rainwater is mainly composed of NaCl 1 mM and its pH is 4.6. Without using a computer, determine the concentration of Ca2+in runoff water.
calculate the pH of a solution formed by mixing 65 mL of .27 M NaHCO3 with 75 mL of .12 M Na2CO3
Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide.
What is the boiing point for each compound?
Geologist can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life
112 mL of a glucose (C6H12O6) solution is prepared by diluting 8.2 mL of a stock solution of unknown concentration. If the dilute solution contains 0.20 moles of glucose
A 1.80-L flask is filled with propane gas (C3H8), at 1.00 atm and -19.4°C. What is the mass of the propane in the flask.
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC Delta T to calculate the temperature change of the 304 g of water.
Calculate the molarity of a solution made by dissolving 5.00 g of glucose (C6H12O6) in sufficient water to form exactly 100 mL of solution.
Name the two types of nucleic acids and where each is found in the cell. Also include the four bases particular to each nucleic acid.
Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 100.0 mL of 0.20 M NH3. The Kb for NH3 is 1.8 x 10-5.
Use Excel or your favorite spreadsheet program to generate the concentration profiles. You may either estimate the stability parameters using the attached plots or (better) use the attached parameterized forms.
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