How can obtain the formula of the hydrate
Anhydrous, hygroscopic, blue CoCl2 forms red-violetCoCl2 * x H2O on exposure to moist air. Ifthe color change is accompanied by an 83.0 % increase in mass, what is the formula of the hydrate?
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Determine the half-life of AB at 313K when a first-order chemical reaction AB --> C + D with an activation barrier of the 91.4 kJ has a half-life of 2 hr at 298K.
The mean teaching hours for the full time faculty at a state university is eight hours per week. What does this tell you regarding the typical teaching hours for full time faculty at that university
Find mean and standard deviation of statistic p hat, sample proportion who are boys? Use Normal approximation to determine probability which p hat would be less than 0.5.
Estimate the vapor pressure of a 10 molar aqueous solution of glucose (C6H12O6, a nonvolatile molecular solid) at 373K when the vapor pressure of pure water at 373K is 760 torr.
Estimate the change in enthalpy for the Mg-HCl reaction using the standard enthalpies of formation. Hf for HCl (aq) = -167.2 kJ; Hf for the MgCl2(aq) = -791.2 kJ.
At the 335 K in the first-order decomposition of dinitrogen pent oxide, assume we start with a 2.50 g sample of N2O5 at 335 K and which is having the 1.50 g remaining after 109 s.
Determine the numbers of hydrogen ions are required and on which side of the equation must they appear?
Explain what carboxylic acid would be produced if the melodic ester synthesis were carried out with a large excess of melodic ester, one equivalent of 1,5-dibromopentane, and two equivalents of base?
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