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Imagine for an experiment the methyl red stock solution was 4.64x10^-6 mol L^-1 instead of 4.64x10^-4 mol L^-1 (so 100 times less concentrated). What would the absorbance readings be for the acid and base forms of methyl red indicator at the acid wavelength? At the base wavelength?
What is the estimated quantity of energy released in the combustion of methanol?
determine the theoretical yield and the percent yield of ethanol if 684 g of sucrose undergoes fermentation and 349 g of ethanol is obtained
.134 mole of KCl and .212 mole of CaCl2 were dissolved in water, calculate total number of Cl ions in the solution
Combustion of solid urea: CO(NH2)2 (s) + 3/2 O2 (g) --> CO2 (g) + N2 (g) + 2H2O According to bomb calorimetry measurements
what is the molecular formula and empirical formula of NH2Cl, molar mass = 51.5 g/mol
What is the value of x in the formula for the hydrate? hint: remember that x represents the ratio of moles of H2O to moles of hydrate compound, and that moles of hydrate
If a 220 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.3*1.0 ft. , what is the average thickness of the sheet in meters?
The compounds below cannot be identifed from IR and H NMR spectra alone. Explain. Suggest how other types of spectroscopy might be useful in solving the structure
lemon juice has a ph of about 2.5. Assuming that the acidity of lemon juice is due solely to citric acid, that citric acid is a monoprotic acid,
Calculate the amount of heat trasnferred when 3.55 g of Mg(s) reacts at constant pressure. 2Mg(s) + 02(g) ---> 2MgO(s) heat= -1204kJ
If 2.55 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 -→ CO2 + H2O , how much oxygen is required? Answer in units of mol.
Calculate the molality, molarity and mol fraction of a 25.4% (by mass) aqueous solution of phosphoric acid (H3PO4). in one litre of solution.
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