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An element crystallises in a body centered cubic lattice. The edge of the unit cell is 286pm and the density is 7.92cm3. What is the atomic mass of the element?
The second order rate constant for a reaction is 4.2300 x 102 M-1s-1. If the initial reagent concentration is 0.93800 mol/L, determine the time (in seconds) required for the reagent concentration to reach 0.21800 mol/L.
draw the molecule by placing atoms on the grid and connecting them with bonds. include all lone pairs of electrons and
What is the limiting reactant when equal masses of iron(III) chloride and potassium phosphate react in solution?
The solubility of p-dibromobenzene in benzene is 80 microliters/100 microliters at 25 degrees C. p-Dibromobenzene also dissolves in acetone. Based on their structures would you predict the solubility of p-dibromobenzene to be greater or less in ac..
Part 2 In a substituent reaction will the leaving group (L=Cl- ) be substitute by a new substituent. Is the substituent in the carbonyl compound nucleophile or electrophile? Argue according to your answer in part 1.
A copper wire (density = 8.96 g/cm3) has a diameter of 0.41 mm. If a sample of this copper wire has a mass of 12 g, how long is the wire?
Determine the indices for the direction vectors A, B, C, and D shown in the following cubic unit cell. Use proper notation for full credit.
Calculate the minimum mass of Pu-238 (in kilograms) that would had to have been loaded on the spacecraft at the time of its launch from earth.
How many moles of PbI2 are formed? What is the concentration of KNO3? What is the remaining concentration of the reactant that was in excess?
At 298k for the cel Pt(s)H2(1 bar)|HCl(0.124m)|AgCl(s)|Ag(s) the electrochemical potential was measured at 0.342V. Calculate the mean activity coefficient for HCl.
Calculate molarity of a KCl solution prepared by dissolving 0.525 moles of Kcl in 250. mL of water.
Explain the heat of vaporization for the compound is 27.49 kJ/mol. Compute the heat required to convert 23.0 g ofC2Cl3F3 from a liquid at15.00°C to a gas at 82.00°C.
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