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Calculate the molarity of the solution produced by mixing the following substances. (Assume that the volumes are additive.)
(a) 40.0 mL of 0.160 M NaCl and 65.0 mL of 0.133 M NaCl
and
Using modern analytical techniques, it is possible to detect strontium ions in concentrations as low as 2.0e+02 pg/mL. What is this detection limit expressed in each of the following units?
(a) molarity of Sr2+
(b) Sr2+ ions per cubic centimeter
Protein Quantification :why did you choose one standard curve over the other for analysis of your unknown?
Which two reagents below would you choose to synthesize 3-ethyl-2-phenyl-2-pentene using the Wittig procedure? (triphenylphosphine, solvents, and a base are provided)
It takes 585J of energy to raise the temp of 125.6g mercury from 20.0 degrees C to 53.5 degrees C. Calculate the specific heat capacity and the molar heat capacity of mercury
What is the energy of a mole of photons associated with light of wavelength 8.00 x 10^2 nm
Calculating Delta H, Use some or all of the following reaction enthalpies to calculate delta H for the reaction:
Calculate the PH and [SO42-] in 500. ml of sulfuric acid solution that was made by dilution of 13.3 mL of 3.0 stock soultion
an electron makes a transition from n = 7 to n = 5. what is the energy associated with this transition
calculate the molar enthalpy of evaporation of water at 100 celcius?
Pure metals are commonly recovered from sulfide ores by successive processes of roasting in air (oxidation), dissolution in sulfuric acid and electrolysis (reduction). Consider the starting ore mineral sphalerite (ZnS). Write balanced chemical rea..
ATP is created from ADP and Pi in the mitochondria of most cells. this reaction is thermodynamically endergonic. what directly provides the energy for this reaction to occur
Determine the molar mass of chloroform gas if a sample weighing 0.389 g is collected in a flask with a volume of 102 cm3 at 97°C. The pressure of the chloroform is 728 mmHg.
The compounds listed above were heated in ethanol and sodium hydroxide for approximately 60 minutes. Then extracted with dichloromethane to get the final product.
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