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3.42 g of a nonvolatile, nonelectrolyte solute of unknown molecular weight is dissolved in 40.0 g of camphor, and the freezing point of the solution is measured to be 163.7 oC. What is the molecular weight of the solute?
A 34.62 mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What is the concentration of the original sulfuric acid solution?
Find delta E, delta H, q, and w for the change in state of 1.0 mol H2O(l) at 84 degree C to H2O(g) at 109 degree C. The heat capacity of H2O(l)= 75.3 J/molK, heat capacity of H2O(g)= 25.0 J/molK, and the heat of vaporization of H2O is 40700 J/mol ..
If 5.0 g of H2 are reacted with excess CO, how many grams of CH3OH are produced, based on a yield of 86%? CO(g) + 2H2(g) -> CH3OH(l)
The standard enthalpy change for the reaction below is -905.4 kJ (for the reaction as written). What is the standard enthalpy of formation of NO(g)
Have a 2.5L sol'n made up of 0.05M Cl-, 0.0002M Br-, and 0.100M CrO4. you slowly add drops of a 0.5M AgNO3 sol'n. ksp for AgCl=1.8E-10, for AgBr=4E-13, and for Ag2CrO4=1.2E-12
Formulate a rule/guideline for determining the number of valence electrons from an electron configuration in elements with d electrons present
Poisons such as sodium azide and sodium cyanide inactivate hemoglobin by irreversibly binding to the heme group of the molecule. These poisons also inactivate the electron transport chain.
a 1.50-liter sample of dry air in a cylinder exerts a pressure of 3.0 atmospheres at a temperature of 25degc. without
Is the reduced form of cytochrome c more probable to give up its electron to oxidized cytochrome a or cytochrome b
Draw all stereoisomers of 3-heptene. To indicate the stereochemistry about double bonds
a gas occupies a volume of 350 ml at 3000. mm of hg and 25.0oc. the number of moles of gas present
How do the two studies differ in ways that affect the accuracy and precision of the results? What makes for high precision and accuracy in any given study? In each of these studies, what factors might not be controlled that could affect the accura..
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