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Compute the concentration of oxalate ion (C2O4) in a 0.175 M solution of oxalic acid (C2H2O4). For oxalic acid, Ka1 =6.5*10-2 and Ka2 = 6.1 * 10-5
suppose new element with atomic number 120 is discovered.if some isotopes of this element have 122 nuetrons and some have 124 neutrons,what can you infer about the atomic mass of the element.
These H+ ions are titrated with 0.10-M NaOH solution. It is found that 20.0mL of NaOH are required. a.) Explain how many moles of NaOH are used
a proton in a linear accelerator has a de broglie wavelength of 128 pmwhat is the speed of the
Describe the role of the citric acid cycle as a central metabolic mechanism. Explain what happens to the cells' abilities to oxidize acetyl CoA when intermediates of the cycle are drained off for amino acid biosynthesis.
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl : Zn(s) + 2HCl(aq) = ZnCl2 (aq) + H2 (g). How many liters of H2 would be formed at 530mm Hg and 16C if 27.0g of zinc was allowed to react
A mixture of 82.49 g of aluminum ( Picture = 26.98 g/mol) and 117.65 g of oxygen ( Picture = 32.00 g/mol) is allowed to react. Identify the limiting reactant and determine the mass of the excess reactant present in the vessel when the reaction is ..
an automobile radiator holds 4 gal of a 10 antifreeze-water mixture. the of antifreeze should be raised to twenty five
Ozone, O3 (g), is a form of elemental oxygen that is important in the absorption of ultraviolet radiation in the stratosphere. It decomposes to O2 (g) at room temperature and pressure according to the following reaction
A battery charger use to recharge NiMH batteries can deliever as much as 0.30 A of current to each battery.
Explain if you were conducting a gas volumetric analysis, Explain how would your calculations to achieve the mass percent of the substance in change if the pneumatic trough contained mercury as opposed to water
How many grams of krypton gas will occupy 2.55 liters at 1.25 atm if it occupies 3.75 liters at 0.750 atm at 255 K?
If 0.50 mole H2 and 1.0 mole He are compared at standard temperature and pressure, the two gases will: a. have equal effusion rate
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