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Explain what quantity of excess reactant remains when 4.80 moles of Fe reacts with 3.93 moles of O2?
4Fe + 3O2 Æ 2Fe2O3
a) 0.23 mol Feb) 0.18 mol Fec) 0.87 mol O2d) 0.33 mol O
Methyl alcohol (CH3OH) has a density of 0.793 kg/L. What volume of it is needed to add to water to make 5 liters of 0.250 M solution?
At room temp, triphenylaluminum is a dimer while triphenyl boron is a monomer.
the active ingredient in aspirin is acetylsalicylic acid hc9h7o4 a monoprotic acid with ka 3.3 x 10-4 at 25 degrees c.
Depict the structures of all the eight structural isomers that have the molecular formula C5H11Br. Name each isomer according to IUPAC system also classify them as primary, secondary or tertiary bromide
Using a sample of gas has a mass of 38.7mg. Calculate the molar mass if its volume is 228mL at a temperature of 57°C and a pressure of 832torr?
The net ionic equation for the reaction, if any, which occurs when aqueous solutions of manganese(II) chloride and sodium carbonate are mixed is
(a) What is teh rate law for the reaction. what is the value of the rate constant
Draw structural formulas for all of the structural isomers of C4H10, C5H12 and C3H7Cl.
The heat of formation of Al2O3(s) is change Hf= -1669kJ/ /mol. a.) Calculate the heat evolved when 3.47 g of Al burns in oxygen. b.) Find the mass in grams of Al that burns when 1039 kJ are evolved.
Will the equilibrium concentration of the product FeNCS2+ in the test solution be too high or too low please explain
what's the molar solubility (mol/L) of Cr(OH)3 at pH=10.00 (not buffered)? Ksp for Cr(OH)3 is 3.0E-29
Reactions with the following values of ^H and ^S are spontaneous or nonspontaneous and whether they are exothermic or endothermic:
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