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Chlorine has two stable isotopes of mass 34.97 u and 36.97 u.Suppose the percent abundance of the lighter isotope were 66.32%.What would be the atomic mass of Cl? (The actual abundance is75.77%.)
The density of the hydrogen peroxide solution is 1.01 g/mL and the solution contains 3.40% H202 by mass. The vapor pressure of water at 24C is 22 mmHg. Based on this data and information calculate the molar volume at STP.
Calculate the pH in the solution formed by adding 10.0 mL of 0.050 M NaOH to 40.0 mL of 0.0250 M benzoic acid (HC7H5O2, Ka=6.3X10-5
discuss in detail the healthcare applications of chemical reactions. which chemical reactions would you consider to be
2.50 moles of COBr2 are introduced into a 2.00 liter flask at 0degrees and heated to a temp of 73 degree celcius. At equilibrium, the equilibrium constant is .190. What is the percent disassociation? what is the equilibrium concentration of each s..
Calculate the frequency (in Hz) of light necessary to move an electron in a He+ ion from the n =2 to n =4 energy level. The Rydberg constant for a helium ion is R = 4.390 x 107 m-1
disubstituted alkene was formed in which the olefinic protons exhibited a vicinal coupling of 9.0Hz in the H NMR. What is the stereochemistry
what is the grams of 9.31 x 10^24 molecules of methanol (CH3OH)? combining 0.357 mol of Fe2O3 with excess carbon produced 19.2g of Fe ; Fe2O3 + 3C ---> 2Fe + 3CO what is the actual yield of iron?
a 0.0587g sample of gas with an empirical formula chf2 is placed in 154 ml flask. it has a pressure of 46.3 mmhg and
Van der Waals constants can be found here. P= ? atm Use the ideal gas equation to calculate the pressure under the same conditions. P= ? atm
Calculate q,w,delta U and Delta H for each segment and for the cycle in which the direction of each process is reversed. In the graph all it says is the P initial =16.6 bar and Vinitial=1.00L and P final=16.6 bar and V final =25L
Sulfuric acid, H2SO4, reacts with sodium chloride, NaCl, to form aqueous sodium sulfate and hydrogen chloride gas. What volume of gas will form at STP when 0.0980 kg of H2SO4 reacts with excess NaCl
The normal range for the carbonyl of a ketone is 1715 cm -1 . Why does the carbonyl peak for cyclopentanone appear at 1750 cm -1. Ring Strain
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