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A 100 mm diameter silicon water (100 ? thick) is oxidized completely according to the reaction Si + O2 > SiO2. What is the thickness of the resulting SiO2 wafer? The molecular weights of Si and SiO2 are 28 and 60 g/mol, respectively. The densities of Si and SiO2 are 2.33 and 2.27 g/cm3, respectively.
This increases to 0.010 Msec^-1 at 90 degrees C. Calculate the activation energy for this reaction.
When solutions of the compound copper (ii) chloride and zinc nitrate are mixed, does the reaction result to form a precipitate, water, gas, or is there no reaction at all.
A Vessel of of volume 22.4 L contains 2.0 mol H2 and 1.0 mol N2 at 273.15 K initially. All the H2 reacted with sufficient N2 to form NH3. Calculate the partial pressures and the total pressure of the final mixture.
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? , draw possibl..
An ice cube that is 25.00 g (temp -20 C) is placed into 225.00 g of H2O that is 22 degrees C. What will the temperature be when the ice cube has just melted. Use 4.184 J/K*g for the specific heat capacity of ice and water.
You put your arm around the persons waist and use your fist to push up on the persons abdomen, an action called the Heimlich maneuver. a) How would this action change the volume of the chest and lungs? b) Why does it cause the person to expel the ..
Rank these elements according to first ionization energy (highest to lowest) : Ne, F, O, N, C, B, Be, Li. HINT: There is a general trend for ionization energy within a period of the periodic table
A 72.0 mL volume of 0.25 Moles HBr is titrated with 0.50 Moles KOH. Calculate the pH after addition of 36.0 mL of KOH
Consider the reversible Carnot cycle shown in the following figure given below with 1.21mol of an ideal gas with CV=5R/2 as the working substance. The initial isothermal expansion occurs at the hot reservoir temperature of Thot = 760K from an init..
Show how many µL of protein sample you will take and add with the desired volume of DTT and Laemmli buffer to make the right concentration of sample.
strip of magnesium reacts in 3.0 mL of 5.0 M HCl over a given period of time. Evaluate the mol mg/mol HCl ratio for the reaction.
Name and list the functions of the prosthetic group(s) associated with a) HDLs , b) interferons, c) viruses , and d)hemoglobin
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