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A 2.747 g sample of manganese metal is reacted with excess HCl gas to produce 3.22 L of H2 (g) at 373 K and 0.951atm, as well as a manganese chloride compound (MnClx). Explain what is the formula of the manganese chloride compound produced in the reaction?
the heat of vaporization of water 40.66 kjmol at 100 degc. compute the quantity of heat that is absorbedreleased when
A student wrote the reaction scheme below for the grignard synthesis of triphenylmethonal. Explain to the student why this representation of the reaction would not yield the desired product
Calculate the quantity of heat energy in kilocalories evolved when 75 g of liquid water forms ice at 0 0C. (heat of solidification = 80 cal/g).
Calculate the molarity of a NaOH solution if 35.42 mL of this NaOH solution is required to titrate 0.7566 g of KHP, KC6H4(COO-)(COOH).
a 33.42 g stainless steelball bearing at 117.82degc is placed in a constant-pressurecalorimeter containing 120.0 ml of
Gas A has a density of 0.20 gL-1, and gas B has a density of 0.80 gL-1, both at the same specific temperature and pressure. Which gas will diffuse faster. Briefly explain.
what is the frequency of the photons emitted by hydrogen atoms when they undergo transistions from n=5 to n=3
What is the molar mass of an unknown gas if the density of that gas is 0.726 grams/liter at a pressure of 0.634 atm and a temperature of
heparin was treated with dimethyl sulfate. the product was hydrolyzed under acidic conditions. draw the structure of
Octane or C8H18 (l) is a component of gasoline. If 35.0 mol O2 (g) in the air is used to burn a sample of octane completely. How many grams of carbon dioxide gas are produced
calculate the concentration of all soluble Hg(II) species. Which Hg(II) species is most prevalent? Assume there are no solids present, that the major ligands present are Cl- and OH-, and ignore activity corrections.
A student carefully diluted 25.0mL of 6 M NaOH solution in 475 mL if distilled water. Calculate the molarity of the diluted solution of base.
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