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What is one of the natural radioactive decay series that begins with uranium or thorium. What are the likely end product and the number of alpha decay steps that occur.
The reaction is: 2Al + Fe(III)2 O3 = 2Fe + Al2O3 If 1 kilogram of iron (III) oxide is used, what is the minimum amount of aluminum power to use to insure that all metallic iron that can be made is made
what mass of zinc can be plated onto a metal sheet a process call galvanizing from an aqueous zinc sulfate solution
Given the standard free energies of formation, what is the value of for the cell reaction?
A 50 mL sample of 0.5 M HCl is titrated with 0.5 M NaOH. What is the pH of the solution after 28 mL of NaOH have been added to the acid
If the heat released during condensation goes only to warming the iron block, what is the final temperature (in ) of the iron block. (Assume a constant enthalpy of vaporization for water of 44.0.)
Question- Use the following given enthalpies to find the enthalpy of reaction for the unknown reaction. Given: Fe2O3(s) + 3 CO(g) --> 2 Fe(s) + 3 CO2(g) DeltaH= -26.7 kJ
Given the balanced reaction below for the oxidation of ethanol by potassium dichromate, calculate the number of liters of a 0.600 M K2Cr2O7 solution needed to generate 0.1665 moles of C2H4O2 from a solution containing excess ethanol and HCl.
Parallel β-strands:-running in the same N- to C-terminal direction)-hydrogen bonds are NOT perpendicular
Find out the molecular mass and its uncertainty for C3H7OH. Note Pay attention to significant figures and use the atomic masses given in the table to the right. Be sure to round the molar mass
The charge carrier density of GaAs at 26oC is 2.25x10^6 cm-3. What is the charge carrier density (in cm-3) at 176oC? The bandgap of GaAs is 1.42 eV.
Calculate the mass of limestone that must be decomposed to produce 500g of lime CAO the equation for the reaction is CaCO3(S) CaO(s) + CO2(g)
A gas occupying a volume of 155 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume
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