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You measured the absorbance of a 1X glycerol solution diluted from the original 5X stock solution.
The cuvette has a width of 1cm and E540= 25000m^-1cm^-1.
The absorance at 540 nm is .5. what is the concentration of the 5X glycerol stock solution?
When a person moves from the fed to the fasting state following a meal, there is an incase in the mobilization of the components of triacylglycerol. all of the following help to maintain blood glucose levels during the first 12 hours of the fast
How many valence electrons are in a Kr atom?
Calculate Hrxn for the reaction below. Ca(s) + 1/2 O2(g) + CO2(g) CaCO3(s) You are given the following set of reactions. Ca(s) + 1/2 O2(g) CaO(s) H = -635.1 kJ CaCO3(s) CaO(s) + CO2(g) H = 178.3 kJ kJ
When an aqueous solution that is 1M each in HCl, ZnCl2, and CoBr2 is electrolyzed, the elemental products formed initially at the cathode and anode are, respectively
1. one of the standard solutions had an abnormally low absorbace reading causing a less positive slop for the
Determine the amount of heat produced when 100 g of CH4 combust, CH4 + 2O2 yields CO2 + 2H2O + 1063kJ
What is the density of hydrogen gas at 23.0^C and a pressure of 1640 psi?
You have a solution of sodium nitrate containing 140g at 65 degrees Celsius. Is the solution saturated, unsaturated, or supersaturated.
A weak base B forms the salt BHCl, composed of the ions BH+ and Cl-. A 0.49 M solution of the salt has a pH of 4.54. What is the value of Kb for the base B
What are 3 theoretical reaction mechanisms that can occur with bromine addition to trans-cinnamic acid. The last mechanism accounts for a mixture of syn and anti products
If the mass of water surrounding the calorimeter was exactly 1000 g and the heat capacity of the bomb calorimeter was 1.75 kJ/°C, calculate the molar heat of combustion of liquid methanol .
A voltaic cell is constructed that uses the following reaction and operates at 298 K. Zn(s) + Ni2+(aq) Zn2+(aq) + Ni(s) (a) What is the emf of this cell under standard conditions
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