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Explain what is the half-life of a compound if 50% of a given sample of the compound decomposes in 60 min? Assume 1st-order kinetics in ([A]/[A]o)=-kt=ln2/k
What monatomic ions do selenium (Z = 34) and cesium (Z = 55) form? (Type your answer using the format [Cu]+ for Cu+ and [Cu]2+ for Cu2+.)
Write equations to show how you would synthesize salicylic acid
The density of platinum metal is 21,450 kg/m3. Find the weight in pounds of a cube of platinum that measures exactly 1 inch on each side.
What tools glassware would i need to carry out this procedure. 100.0 mL of 2,500. ppm copper (II) acetate solution using solid cupric acetate
When crystals of D-fructose are dissolved in basic aqueous solution, two aldohexoses are obtained. Propose the structures for the aldohexoses.
what mass of melamine will be obtained from 168 kg of urea if the yield of the overall reaction is
Depict the skeletal structure of the major organic product resulting from the reaction of 2-methylbutane with Br2 in the presence of light and heat
Find the pH of the equivalence points and the volume of 0.0372 M NaOH needed to reach it in titrations of
if the freezing point of pure toluene is -95.15 oc and its freezing point depression constant is -8.38 ocmolal what is
The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)? Assume that there is no volume change when the Cu(NO3)2 is add..
Calculate the wavelength and frequency of an emitted gamma particle having the energy of 1.29x 10^11 J mol. Enter in scientiic notation.
what mass of this substance must evaporate in order to freeze 230g of water initially at 16 degrees? the heat of fusion
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