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The reaction shown above has been determined to be first order with respect to N2O5. If 0.0250 moles of N2O5 are charged into a 2.00 L vessel, explain how many moles will remain after 150 seconds if the rate constant is 6.82 x 10-3 s-1 at 70 oC?
suppose you want to do a physiological experiment that calls for aph 6.5 buffer. you find that the organism with which
An ascorbic acid supplement was analyzed by titrating a 0.1000g sample dissolved in water with 0.0200M NaOH. A volume of 15.20 mL of the base was required to completely neutralized the ascorbic acid. What was the percentage by mass of ascorbic aci..
Scientists can use mutants to study metabolic pathways. These organisms have a mutation in a gene encoding a metabolic pathway enzyme that results in the inactivation of that enzyme
Calculate the pH of a solution formed by mixing 65 mL of 0.31 M NaHCO3 with 75 mL of 0.10 M Na2CO3.
Place the following in order of increasing strength as reducing agents (all under standard conditions). (Use the appropriate symbol to separate substances in the list.) Cr3+, H2, Zn, Li, F -, Fe2+
A 4.63 g sample of a molecular compound is dissolved in 103 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51?C.
Silver ion reacts with excess CN- to form a colorless complex ion, Ag(CN-)2 , which has a formation constant Kf=2*10^20. Calculate the concentration of Ag+ in a solution prepared by mixing equal volumes of 1.8×10-3M AgNO3 and 0.20M NaCN
A piston has an external pressure of 14.0 . How much work has been done if the cylinder goes from a volume of 0.180 liters to 0.650 liters.
Find the concentration of Pb2 in 0.10 M KI saturated with PbI2. Include activity coefficients in your solubility-product expression.
The density of the unknown is 0.714g/mL. The Kf of nitrobenzene is 6.87 ^0C/m. Calculate the molar mass of the unknown.
what mass of limestone is required to remove all the sulfur dioxide formed by the combustion of 7.5 104 kg of coal that is 0.33 mass % sulfur?
State a balanced reaction that describes how sodium bromide as well as sulfuric acid will produce hydrobromic acid
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