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3.586 g of an unknown solid are dissolved into 118.4 g of benzene. The freezing point of the solution decreases by 0.905 ° C compared to that of the pure solvent. What is the molar mass of the unknown solid. The freezing point depression constant for benzene is 5.46° C/m.
Imagine that you have two iron blocks, one with a mass 226 g at a temperature of 46.0 oC, and another with a mass 380 g at a temperature of 134 oC. The two blocks are brought into contact with each other in an insulated container. What is the fina..
What is the molarity of an NaCl solution prepared by dissolving 9.3g NaCl in sufficient water to give 350mL of solution.
BNCT relies on the initial targeting of tumor cells by an appropriate chemical compound tagged with 10 5 B , which preferentially concentrates in tumor cells.
If 125 cal of heat is applied to a 60.0 g piece of copper at 24C, what will the final temperature be? The specific heat of copper is 0.0920cal/(g x C).
What is the velocity of a first-order reaction when the reactant concentration is 6 x 10-2 M and the rate constant is 8 x 103 sec-1?
Photochemical chlorination of heptane gave a mixture of monochlorides containing 15% 1-chloroheptane. What other monochlorides are present? Estimate the percentage of each of these additioanl C7H15Cl isomers in a monochloride fraction.
Hydrogen peroxide decomposes to give water and oxygen gas according to the equation below. If 3.0 moles of hydrogen peroxide decompose
7.5g of ammonia at STP is heated to a temperature of 25C and simultaneously compressed to a volume of 8.0L. Calculate the new pressure of the gas.
Descibe at least four possible factors which may influence the amount of light absorbed by a solution and how these factors may affect the absorption
Which of the following compounds would you expect to be ionic?
Draw the skeletal structure for major organic product produced when the arene given reacts with 2 equivalents each of Na and HOCH3.
Using 80.0g of Methane and 16.3g of Water, how many liters of H2 can be produced at STP? What is the limiting reactant?
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