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How many milliliters of 1.00 M KOH should be added to 100mL of solution containing 10.0 g of histidine hydrochloride (FM 191.62) to get a pH of 9.30?
Describe the preparation of 12 mL of a 0.050 M solution of each of the halogens, using the reactions in the preceding question. Available to you are solid Ca(OCl)2
How many grams of sodium formate, NaCHO2, would have to be dissolved in 1.4 L of 0.13 M formic acid (pKa 3.74) to make the solution a buffer for pH 3.76
Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neutral element possess
what is the volume of a sample of helium that has a mass of 6.36 times 10-3 g and a density of 0.17847 gl? answer in
You performed this fractional distillation using an air condenser as the "fractionating" column. Explain why the distillate may have been obtained in higher purity if you would have used a fractionating column packed with glass beads.
when some large nuclear plants run at full capacity they produce about 1900 mw of electrical power. at this rate what
Calculate the number of moles of carbon dioxide formed if 231 grams of calcium carbonate decomposes. CaCO3(s) ? CaO(s)+CO2(g)
A solution transmittance is 35% at 260nm. what will be solution absorbance if you dilute 25.0 mL of the solution to 50.0mM
Why do you think we need to convert the calcium carbonate to calcium chloride befoe we do our EDTA titrations? What specific condition in our titrations require this?
What is the enthalpy change needed to change 1 lb of a water-steam mixture of 60% quality to one of 80% quality if the mixture is at 300 oF
2.00 moles of a gas occupies 62.2 L at a particular temperature and pressure. Its density is 0.900 g/L. The standard molar volume is 22.4 L/mole. What is the molar mass.
question how many grams of naphthalene c10h8 must be added to 25.00 g of ccl4 so that the vapor pressure of ccl4 over
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