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What percent of a sample of cesium-137 (first order beta negatron decay with t1/2 = 30 years) remains after 100 years? What is the product?
In a gas mixture, the partial pressures are nitrogen 0.559 ATM, oxygen 115 torr, and helium 0.296 mm Hg. What is the total pressure (in torr) exerted by the gas mixture
The volume of a sample of hydrogen is 798mL and it exerts 621mmHg pressure at 5.00C. what volume does it occupy at standard temperature and pressure.
What constant current (in amperes) is required to produce aluminum by the Hall-Heroult
In the malachite green method for measuring phosphorus concentration, what it the purpose of each of the following reagents? Include in your answer what would happen if you didn't use the reagent.
how does temperature affect the separation of strands in gc content71 verus gc content of 45. which will require a
Ions B and C react to form complex BC. If 20.0mL of 1.25M B is combined with 20.0mL of 1.25M C, 0.00650 mol of complex BC is formed. Determine the equilibrium constant for this reaction.
The rate law for a hypothetical reaction is rate=k[A]2 When the concentration is 0.10 moles/liter, the rate is 2.7 * 10-5 moles/liter second. What is the value of k?
If a 200 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.5 by 1.0 ft , what is the average thickness of the sheet in meters?
10.0 mL sample of aqueous HCL requires 32.34 mL of 0.108 M NaOH to reach the endpoint. What is the molar concentration of HCL. the equation for reaction is NaOH+HCl ..... NaCl + H2O
At constant temperature and pressure, how many liters of oxygen would be needed to completely combust 0.350 L of propane?
Compare the reactors when 1 reactor is a BSTR with V=10m^3 and the other is a CSTR with V=10m^3 &Q=10m^3/s. Assume Ca(t=0)=Ca0=10mol/m^3. a) Solve for Ca(t) and Xa(t) for the BSTR and the CSTR.
Show how you would synthesize ethyl 2-benzyl-3-phenylpropenoate from benzaldehyde, ethyl acetate and benzyl bromide
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