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Small spheres of equal mass are made of lead (density =11.3 {rm g}/{rm cm}^{3}), silver (10.5 {rm g}/{rm cm}^{3}), and aluminum (2.70 {rm g}/{rm cm}^{3}). Without doing a calculation, list the spheres in order from the largest to the smallest.
The temperature of 55.6 grams of a material decreases by 14.8 degrees C when it loses 3080 J of heat. What is its specific heat?
If 16.0 g of methanol are reacted with an excess of PBr3, how many grams of CH3Br would be formed if there is a 25.0% yield
What is the probability of populating the first excited vibrational state (n = 1) at 298 K? Does isotopic substitution affect the probability? Would the intensity of absorption peaks be affected by isotopic substitution?
Describe the type of bonding that your unknown has (covalent, polar covalent). Locate and show any dipoles in your compound
Complete and balance the equation for this reaction in acidic solution. Phases are optional.
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water. Enter your answer in kilojoules per mole of compound t..
What mass of oxygen will be dissolved in the water? The temperature of the water is 58 C, KH (02)=.00141 M/atm, and the mole fraction of oxygen gas in .23
Potassium hydroxide is used to precipitate each of the cations from their respective solution. Determine the minimum concentration of KOH required for precipitation to begin in each case.
Propose a reasonable synthetic strategy for the synthesis of trans-6-methyl-3-heptene from 4-methyl-1-pentyne.
If ammonia was added to a saturated solution of copper(II) iodate in a equilibrium with its precipitate, would the copper ion concentration increase, decrease, or stay the same. Why
Solid sodium iodide is slowly added to a solution that is 0.0050 M Pb2+ and 0.0050 M Ag+. [Ksp (PbI2) = 1.4 × 10-8; Ksp (AgI) = 8.3 × 10-17] Calculate the Ag+ concentration when PbI2 just begins to precipitate.
Given mass of a gas 0.26g, pressure is 763mmHg and volume of 147mL.by using an ideal gas law calculate the molar mass of the gas
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