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The rate law for a hypothetical reaction is rate=k[a]2. when the concentration is .10 moles/liter, the rate is 2.7 times 10-5 moles/liter second. what is the value of k?
when 0.500 l of a 1.00 m solution of Pb( NO3) 2 is mixed with 0.500 l of a 1.00 m solution of Kl how many grams of lead(II) iodide are formed
A mixture of four gases exerts a total pressure of 860 mm Hg. Gases A and B each exert 220 mm Hg. Gas C exerts 110 mm Hg. What pressure is exerted by gas D?
A 5.00 g sample of KBr at 25.0°C dissolves in 25.0 mL of water also at 25.0°C. The final equilibrium temperature of the resulting solution is 18.1°C.
What is the final temperature (in °C) of 1.53 g of water with an initial temperature of 12.0°C after 7.478 J of heat is added to it?
Which instrument can be used to determine the total calcium in a small blood sample.suggest a second method suitable for determine the free calcium ions on a similar sample of bood.
if .158g of baruim halide is completely precipitated with H2SO4 and .124g of BaSO4 is collected,what is the formula of the barium halide?
Combustion reaction, A fuel has the following weight percentage composition, C = 52%, H = 11%, S = 0%, O = 9%, moisture = 13%, Ash = 15%
Octane has a vapor pressure of 40. torr at 45.1 degrees celcius and 400. torr at 104.0 degrees celcius. What is its heat of vaporization (R=8.214 J/K mol)
Given a restriction enzyme that has a concentration of 50 units/ml but your experiment requires that the concentration be reduced to 2.5 units/ml.
A 1.630 g sample of naphthalene, C10H8(s), is completely burned in a bomb calorimeter assembly and a temperature increase of 8.44°C is noted.
The heat of vaporization of benzene, C6H6 , is 30.8 kJ/mol at its boiling point of 80.1 °C. How much heat is required to vaporize 128 g benzene at its boiling point ?
Calculate the concentration of solution containing one mole of phophate per litre
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