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A sample of pure oxalic acid hydrate was obtained by extracting a plant called Snake Tongue. A 3.000 g sample of the materials heated carefully in a vacuum oven until no more mass was lost from the sample. After heating, th final weight of the material was 2.143g. What is the formula of the oxalic acid hydrate, (COOH)2 *X H20? (mol.wt. (COOH)2=90.0)
Calculate the pH and pOH of a solution of HI made by dissolving 3 x 10 ^-5 moles of HI (a strong acid) in 570 mL of water.
calculate the atomic mass of an element with a measure specific heat of 0.14 J/(g C). Express your answer in atomic mass units to two significant figures.
Methane gas (CH4) comprises 7 x 10-5 % by mass of the Earth's atmosphere. What is the residence time of the gas in the atmosphere if it is being lost to the methane sinks at the rate of 4 x 1011 kg yr-1.
Calculate the frequency of the loght corresponding to the lowest energy pure virational and pure rotational transitions. In what regions of the eletromagnetic spectrum do the transitions lie?
the practical benefits of using a more favorable direction of the reaction for a routine enzyme activity assay
given a titration between 60.00 ml of 0.100 m acid ha ka a x 10-6 and the titrant sodium hydroxide naoh whose
Explain the fact that KOH is much more soluble in liquid ammonia containing a little water than in pure liquid ammonia.
solution of potassium sulfate. Assuming that all ionic species are completely dissociated, what is the osmotic pressure of the mixture in torr?
Part A Draw an orbital diagram for boron. Use this tool to draw the orbital diagram. Part B Draw an orbital diagram for scandium (Sc). Use this tool to draw the orbital diagram.
A reaction mixture in a 5.21 L flask at a certain temperature contains 27.1g CO and 2.32g H2. At equilibrium, the flask contains 8.63g CH3OH
Why does it not make sense to think of sand as just being composed of a bunch of SiO2 molecules
Calculate the decomposition for this process at constant pressure and 25o C: CaCO3(s) = CaO(s) + CO2 look up the standard enthalpy formation of the reactant and product
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