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Why does red cabbage take on a red coloration in a vinegar and oil salad dressing? A purple coloration when fresh? A blue coloration when exposed to dish soap?
What are the actual chemcial pH indicators in red cabbage? Explain how it works in detecting pH.
Calculate the standard free energy change at 25 degree Celsius with F=96,500 for 3Fe^2+(aq) + 2Cr(s) --> 3Fe(s) + 2Cr^3+(aq)
how long would it take for 1.50mol of water at 100.0 degrees to be converted completely into steam if heat were added
Use the de Broglie relationship to determine the wavelengths of the following objects: an lithium atom moving at 2.5*10^5m/sUsing Heisenberg's uncertainty principle,
SO2 at 1000oC S + O2 2SO2 + O2 2SO3 at 500 oC with a vanadium catalyst SO3 + H2O H2SO4 And what would be do with this sulfuric acid?
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.200 M HClO(aq) with 0.200 M KOH(aq). The ionization constant for HClO can be found here.
A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are present in a typical adult
The beta blocker drug, thimolol, is expected to reduce the need for heart bypass surgery. Its composition by mass is 49.4%C, 7.64%H, 17.7%N, 15.2%O, amd 10.1% S. Determine its empirical formula
For the following molecules and ions, draw a Lewis structure, calculate formal charges for each atom, and determine the oxidation number for each atom.
Determine the cell reaction, the standard cell potential (E0cell) and the half-cell that acts as the cathode for the voltaic cells composed of the following half-cells.
The mixture was stirred, causing all of the sample to dissolve. The excess HCl in the solution required 38.4 mL of 0.164 M NaOH for complete neutralization in a titration. What was the molecular formula of the white substance
what is the mass in grams of 17.55ml of acetone? and what is the volume in milliter of 7.26g of acetone?
The molar heat capacity of a diatomic molecule is 29.1 J/K·mol. Assuming the atmosphere contains only nitrogen gas and there is no heat loss, calculate the total heat intake if the atmosphere warms up by 5°C during the next 50 years in J/mol
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