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The stockroom has an 8.0 M solution of Na3PO4. Explain how many mL of the stock solution are necessary to prepare 25 mL of a 3.0 M solution?
A. 15.6 mL B. 9.4 mL C. 0.96 mL D. 0.11 mL
Does precipitate only form when two solutions are mixed. Or could a solid and an aq solution produce a precipitate. For example: Mg (s) + CuSO4 (aq) -> MgSO4 (aq) + Cu (s)
At 8:00 a.m., a patient receives a 58-mg dose of I -131 to obtain an image of her thyroid. If the nuclide has a half-life of 8 days, what mass of the nuclide remains in the patient at 5:00 p.m.
The combustion of ethene, C2H4 , occurs via the reaction C2H4 (g) + 3O2(g) ===> 2CO2(g) + 2H2O(g) with heat of formation values given by the following table
Compute the free energy change needed for transport of sufficient protons to make gastric juice of 1 litter at the temperature of 37 degree celsius hence expect above reaction will happen spontaneously?
an industrial process makes calcium oxide by decomposing calcium carbonate. which of the following is not needed to
Gallium is a metal with a wide variety of uses. Some of its applications include computer memory chips, light emitting diodes and lasers. Radioactive isotopes of gallium are used to image the human body and locate tumors.
Calculate the number of fungal particles present in 1 m3 in the original air sample and express your answer in scientific notation, to one significant figure.
Calculate the molar solubility of the following compounds from the Ksp values given, Zn(OH)2
what is the molarity of phosphoric acid in a solution that is 84% by mass phosphoric acid and has a density of 1.87 g/ml?
Consider the following gas-phase equalibrium reaction: N2(g)+O2(g) 2NO(g); Kc=4.10x10^-4 at 2000 degrees C. If 6.0 mol of NO is introduced into a 1.0L container at 2000 degrees C, what is the concentration og NO when equalibrium is reached?
a 1.50-liter sample of dry air in a cylinder exerts a pressure of 3.0 atmospheres at a temperature of 25degc. without
Reactions of alcohols with hydrogen halides yield the important class of compounds known as alkyl halides. Reactivity towards the hydrogen halides
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