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Find the pH of the following solutions: a mixture of 10.0 mL NaOH solution having pH 11.00 and 10.0 mL HClO4 having pH 1.00. 2.) Using activities calcalute the pH and concentration of H+ in pure water containing 0.05 M CaCl2 at 25 degrees C
A 0.5118g sample of CaCO3 is dissolved in a 12 M HCl and the resulting solution is diluted to 250.0mL in a volumetric flask. How many moles of CaCO3 are used (formula mass=100.1)
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air.
explain why most multicellular organisms use an iron-containing protein for oxygen binding rather than free iron. your
Which of the following statements concerning nuclear fission is correct?
A sample of natural gas at STP is 78.0 % CH4 and 22.0% C2H6 by volume. How much heat is produced from combustion of 1.60 L of this mixture. Assume ideal gas behavior and assume that the products of the combustion are CO2 (g) and H2O (l).
Aluminum hydroxide and sulfuric acid reaction, Which reagent is the limiting reactant when 0.450 mol Al(OH)3 and 0.550 mol H2SO4 are allowed to react? How many moles of the excess reactant remain after the completion of the reaction? Please explain..
Find the solubility of Cr(OH)3 in a buffer of pH 11.0 (Ksp of Cr(OH)3 = 6.3 multiplied by 10-31 and Kf of Cr(OH)4- = 8.0 multiplied by 1029.
Sodium azide, NaN3 , is made for use in car 'air bags'. When this compound is heated to 300 degrees celsius, it rapidly decomposes into its elements.
Calculate the Ph after the following volumes of titrant have been added (a)0ml (b)20ml (c)59ml (d)60ml (e)61ml (f)65ml. will give all the points with some bonus points for showing all the steps
Explain what happens to the atomic number of a nucleus when positron emission occurs
For an alloy that consists of 90.1 g copper, 102 g zinc, and 5.92 g lead, what are the concentrations of (a) Cu (in weight percent), (b) Zn (in weight percent), and (c) Pb (in weight percent). The atomic weights of Cu, Zn, and Pb are 63.54, 65.39,..
Calculate the product of 3.214 x 10-6 and 2.6x10-3. Answer using the correct number of significant figures.
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