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Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder. When the mixture is poured down a clogged drain, the following reaction occurs: 2NaOH(aq) + 2Al(s) + 6H2O(l) → 2NaAl(OH)4(aq) + 3H2(g) The heat generated in this reaction helps melt away obstructions such as grease, and the hydrogen gas released stirs up the solids clogging the drain. Calculate the volume of H2 formed at 23°C and 1.00 atm if 3.12 g of Al are treated with an excess of NaOH.
The introduction state that often the rate doubles for each temperature increase of 10degree celcius. What value of the activation energy would cause the rate to double between 25~35degree celcius? ((k value)
Explain In the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water, Explain what is the oxidizing agent
1. nitrogen and oxygen gases react to form dinitrogen trioxide gas.nbsp2 n2g 3 o2g 2 n2o3gat a certain temperature and
an aqueous solution is prepared by diluting 3.30mL acetone, CH3COH3, (d= 0.789g/mL) with water to a final volumeof 75.0 mL. The density of the solution is 0.993 g/mL. what are the molarity and the molality of acetone in this solution?
A student prepared a saturated solution of copper (II) tartrate by cooling it to 10 degrees C. While the solution was still cool, the concentration of copper (II) was determined. How would the value of the solubility product (Ksp) be affected? Exp..
An organic compound was synthesized & a sample of it was analyzed & found to contain only C, H, N, O, & Cl. It was observed that when a 0.150g sample of the compound was burned it produced 0.138g CO2 & 0.0556g H2O.
Consider the following reaction for the dissociation of benzoic acid (MW=122 g x mol^-1) in water where Ka for benzoic acid is 6.5 x 10^-5. C6H5COOH(aq) + H2O (l) C6H5COO-(aq) + H30+(aq)
The enthalpy of combustion for propane is -2044 kJ/mol. How many liters of propane (at STP) must be burned in order to convert 438 grams of ice initially at -6°C to liquid water at 64°C
You measure 50,000 decays of a radioactive sample in 20 seconds. You measure the same sample 50 days later and observe only 10,000 decays in 20 seconds. What is the half life of the radioactivity
Poly(propylene) is made of one kind of monomer. Give the two monomers used to make nylon 6,6. Why are two monomers needed to make nylon 6,6 while only one is needed to make poly(propylene)?
What is the phase of the standard states of the following elements and compounds. (a) NH3 (b) Fe (c) N2 (d) Br2
twenty dietary iron tablets with a total mass of 22.131 g were ground and mixed thoroughly. then 2.998 g of the powder
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