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When an irregularly shaped chuck of silicon weighing 8.763 g was placed in a graduated cylinder containing 25.00 mL of water, the water level in the cylinder rose to 28.76 mL. What is the density of silicon in g/cm^3
The diameter of the laser beam is 5.5 mm. If the laser is pointed toward a pinhole with a diameter of 1.2 mm, how many photons will travel through the pinhole per second?
Gaseous NOCl is placed in a closed container at 193 oC, where it partially decomposes to NO and Cl2: 2 NOCl(g) 2 NO(g) + 1 Cl2(g) At equilibrium it is found that p(NOCl) = 0.008460 atm, p(NO) = 0.007950 atm, and p(Cl2) = 0.004590 atm. What is the ..
If the energy needed to raise the temperature of the water to 29.0 degrees Celsius is obtained from the combustion of methane (CH4), what volume of methane, measured at STP, must be burned
Which of the following pairs has about the same atomic radius?
Use these values, with other ?fH° values, to decide whether the reaction of hydrazine or 1,1 dimethylhydrazine with oxygen provides more energy per gram.
How can integral dQrev/T vanish when integrated around a cycle while the cyclical integral of dQrev remains finite
What amino acids are preferred for this polypeptide? Draw the side chain structure of each amino acid that can be used for this polypeptide. Label them with both three letter and single letter codes.
A 99.8mL sample of a solution that is 12.0% KI by mass(d=1.093g/mL) is added to 96.7mL of another solution that 14.0%Pb(NO3)2 by mass (d=1.134g/mL). How many grams of PbI2 should form.
a beaker of an acetic acid with 1.00times102ml buffer with a ph of 5.000 is sitting on a bench top. it is found that
determine the maximum number of coordination sites that the ligand can occupy on a single metal ion.
Draw a planar structure for the following compound using dashed or solid wedges to show the stereochemistry of the substituent groups
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295k and volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1 mL atm K^-1 mol..
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