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What volume of an HCL solution with a pH of 1.3 can be neutralized by one dose of milk of magnesia?
Where does the extra electron come from when determining the formal charge of NH2? N has 5 valence electrons and H each have one which lead to two bonds and one lone pair and one lone electron which equals a formal charge
In the determination of the density of a cylinder of aluminum, it was necessary to measure the volume of the sample. The diameter of the cylinder was 38.2 mm and the length of the cylinder was 15.5 mm. What was the volume of the aluminum cylinder ..
Formula Molar Mass (g/mol) ?G°f (kJ/mol) ?H°f (kJ/mol) S° (J/(K mol)) I2(g) 253.812 19.33 62.44 260.69 I2(s) 253.812 0 0 116.14 T = (NA) K R = 8.314 J/(K mol) Calculate the temperature (K) at which the equation as written is at equilibrium.
BH+ClO4- is a salt formed from the base B (Kb = 1.00 × 10?4) and perchloric acid. It dissociates into BH+, a weak acid, and ClO4- , which is neither an acid nor a base. Find the pH of 0.100 M BH+ClO4-.
What is the heat change of a 25 g block of iron that starts at a temperature of 22 degrees C and increases to 79 degrees C?
Calculate the approximate length of PVA strand assming that each monomer unit contributes two carbon atom diameters to the length
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 550 mL of a solution that has a concentration of Na+ ions of 0.600 M
A 20.0-mL sample of 0.800 M HBr solution is titrated with 0.800 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added.
Calculate teh energy absorbed in (kJ/mol) by a carbon dioxdie molecule that has absorbed a single photon of Thermal IR light having wavelength of 15 micrometers.
Students were instructed to mix the benzaldehyde and acetone starting materials in their conical vials before adding the ethanolic sodium hydroxide solution. a. Why was this essential to the success of the reaction
What is the number of bonding electron pairs on the central atom of SiH4? What is the number of nonbonding electron pairs on the central atom of SiH4? What is the Molecular Geometry of SiH4
A radioactive sample contains 2.50g of an isotope with a half-life of 3.8 days. How much of the isotope in grams will remain after 14.2 days
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