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If 15.3 kilograms of Al2O3(s) , 60.4 kilograms of NaOH and 60.4 kilograms of HF react completely, how many kilograms of cryolite will be produced. What is the total mass of the excess reactants left
Provide a structure for the following compound: UV spectrum: ?max = 272 nm (? = 39,500); EI mass spectrum: m/z = 129 (molecular ion and base peak); IR: 2200, 970 cm-1; 1H NMR: ? 5.85 (1H, d, J = 17
diamond powder (C) and BaCO3, separates the mixtures and recovers 1.75g sugar, 0.86g diamond powder and 2.29g BaCO3(s). Calculate the percent recovery and percent composition if the initial mixture
What are the reactions happen at the negative limit. Why is the negative limit in a given medium always more positive for platinum than it is for glassy carbon
2,2-dibromo-3-methylpentane can be prepared by an addition reaction of excess HBr with an alkyne. Draw the structure of the alkyne, name it, and write the reaction
how to Devise a separation scheme for a mixture (C6H12O6) crystals, diamond powder (C) and BaCO3
List all the ionic species present (before any solution occurs) when the following solutions are mixed together: Ni(NOsub3)sub2(aq) and CaClsub2(aq)
Predict the major and minor products of the following reaction. Name the products using systemic names. CH3CH2CH=CH2+H20->H+
Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution containing sodium iodide. How many grams of sodium iodide, NaI must be used to produce 19.1g of iod
The most common source of copper Cu is the mineral chalcopyrite CuFeS2. How many kilograms of chalcopyrite must be mined to obtain 300.g of pure Cu
Microwave ovens emit microwave energy with a wavelength of 12.0 cm. What is the energy of exactly one photon of this microwave radiation
A colloidal compound has 10^15 spherical particles per gram with a density of2.7 g/cm^3. What is the surface area per gram
draw an electron-dot structure for acetonitrile, c2h3n, which contains a carbon-nitrogen triple bond. how many electrons does the nitrogen atom have in its outer shell? how many are bonding, and how
25 lbs of propane are held in a sealed container at 350 psia. The volume of the container is 3 ft3. Calculate the weight and volumes of the two phases in the container.
A 10.00L vessel conatining CO2 has an internal pressure 20.0 atm at 273K Calculate the number of Moles Using the virial equation and van der wals equation
Considering the combustion of propane, how many grams of O2 are needed to completely burn 32.1g of C3H8
A pure silver ring contains 2.80 x 10^22 silver atoms. How many silver atoms does it contain. Please show your steps and solutions.
In the gravimetric determination of Zn^2+, 2.2024 g sample was dissolved and made up to volume in a 100.0 mL flask. A 10.0 mL aliquot were precipitated by adding a soluble pyrophosphate salt and hea
1.20.00 ml of 0.100 F Pb(No3)2 (FW 331.2) are mixed with 15.00 ml of 0.125 F Nal (FW 149.9). Lead (II) and iodide form an insoluble salt pbl2 (FW 461.0) Calculate the concentration of each of the re
The final, dried product weighed 0.1314 g. What is the percent weight of Zn (65.39 g/mol) in the original sample
1.000 gram of lead sulfate, PbS04(fw 303.2) is mixed with 1.000g of potassium chromate,k2cr04(FW 194.2) in 100ml of water. The reaction produce the percipitate lead chromate quantitatively, pbcr04(F
A sample of cacl2 is dissolved in 250ml. A 5.00ml aliquot of the solution is dissolved to 250ml. Then a 5.00ml of the second solution is dissolved in 500ml. The final solution is analyzed and the ch
When 2.00 mL of a 5.0 ppm Cu^2+ solution was added to the above Cu^2+ sample solution, the new absorbance was found to be 0.324 AU. What was the concentration of Cu^2+ in the original 10.0 mL soluti
Describe how you prepare 5.00 times 10^2 mL of 0.7 M CuSO4. How many grams of CuSO4 are needed. How many significant figures are used for the mass. What type of container should it be made up in.