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When a 44.5 g sample of an unknown compound is dissolved in 500 g of bensene, the freezing point of the resulting solution is 3.77*C. The freezing point of pure benzine is 5.48*C. Calculate the molar mass of the compound.
What are the total pressure in the flask and the partial pressure of HOF after exactly 30 minutes and After 45 minutes If the partial pressure of HOF in a 1.00-L flask is initially1.00 × 10 2 mm Hg at 25 °C?
An excess of NaOH is treated with 1.1L of dry HCl gas (measured at STP). What is the weight of NaCl formed?
Calculate the cell potential for the following reaction that takes place in an electrochemical cell
The volume of a sphere is . A sphere of metal has a radius of 1.56 cm. It has a mass of 147.9 grams. What is the density of this metal?
Determine how many moles of carbon dioxide should be added to the system to bring the equilibrium carbon monoxide concentration to 0.743 mol/L
The osomotic pressure of this solution was 10.68 torr at 25 degrees C. What is the molecular mass of the protein?
how do you find the specific heat of platinum if 23.6 grams is heated from 10.0c to 20.0c using 30.68 J of heat.
Making a dilute solution, A student in lab class needs to provide a detailed description of how to make a dilute solution of 500 g
When 30 mL of a 365 mL stock solution containing 1.8999999999999997 M AlCl3 is diluted to 81 mL, how many moles of Cl- are in the new solution?
The equilibrium constant at 25°C is 8.9 × 10-12. One hundred grams of magnesium hydroxide is added to 1.00 L of water and equilibrium is established.
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.
calculate delta G foor the combustion of ethane: 2C2H6(g) + 7O2(g) = 4CO2(g) + 6H2O(l)
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