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1) If your spectrophot meter can measure n absorbance up to 1.5, explain what is the maximum concentration of NADH that you can measure without diluting?
2) If you add 3mL of water to 1mL of NADH, mix as well as get an absorbance of 0.2, Explain what is the concentration of the original NADH solution?
Compute the initial pressure of the gas in the cylinder. b. Compute how much heat must be added to the gas in the cylinder for the spring to compress by 2cm
metallic molybdenum can be produced from the mineral molybdenite mos2. the mineral is first oxidized in air to
Nitrogen gas when combined with hydrogen gas forms ammonia gas according to the following equation N2(g) + 3H2(g) = 2NH3(g). Delta H(rxn)=-56 kJ. The delta H(rxn) was determined using Hess's Law and the following three related reactions:
Identify each of the following molecules as polar or nonpolar: a) H2S; b) PBr3; c) SiCl4; d) SO2.
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? For bonus mark..
Calculate the pH of the final solution after 250 mL of a 0.157 mol dm-3 solution of HCl is added to 500 mL of a 0.103 mol dm-3 solution of NaCN (Ka HCN = 6.2 × 10-10).
Draw the crystal-field energy level diagram for the 3d obitals and show the placement of d electrons assuming this is a weak-field complex ion.
One of the steps in the commercial process for converting ammonia to nitric acid involves the conversion of NH3 to NO:
A piece of galena has a volume of 5.4 cm3. If the density of galena is 7.5 g/cm3, what is the mass (in kg) of that piece of galena?
Calculate the change in entropy when 54 ml of hot (95 C) water is added to 90 ml of cold (5 C) water is a closed cup, given that Cp (H2O, l) = 75.5 J/molK
How many kilograms of CO2 are produced from the complete combustion of 1.00L of gasoline assume that the gasoline has the formula C8H18.
An unknown metal forms two different compounds with oxygen. When a 2.412 g sample of the metal is combined with oxygen, 3.466 g of Oxide A are formed. What is the cation charge for oxide A
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