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the diameter of a carbon atom is 1.54 A. (a) express this diameter in picometers. (b) how many carbon atoms could be aligned side byside across the width of a pencil lime that is 0.20 mm wide?
How many molecules of substance B are produced when 30.0 g of substance A reacts? The molar mass of substance A is 23.5 g/mol. A) Convert the mass of A to moles
Calculate the mass of Sodium Nitrate required to prepare 50cm3 of 0.2 moll-1 solution
Calculate (a) the volume occupied by 8.2 mmol of the gas under these conditions and (b)an approximate value of the second virial coefficient B at 300 K.
In which reaction does the oxidation number of hydrogen change?
Calculate the sample weight of liquid bleach containing 5.0% by weight of NaOCl that would oxidize enough I- to consume 0.80 mL of 0.15 M sodium thiosulfate.
Give the structure for an isomer of compound A that has a melting point that is appreciably different from that of A yet NMR spectra that are almost identical to those of A. Include wedge/dash bonds.
Calculate the concentrations of all species at equilibrium for each of the given original mixtures. 1.2 mol of NOCl and 1.2 mol of NO in a 1.0-L flask? K = 1.6*10^-5 mol/L
A certain element consists of two stable isotopes. The first has atomic mass of 7.02 amu and a percent natural abundance of 92.6%.
what is the purpose of anhydrous CaCl2? Why it is important that none of the solid CaCl2 be included in the final distillation of your 1-bromobutane?
Assuming the waste heat of the engine provides all the heat necessary to melt the iceberg, how much work can this do?
A gas occupying a volume of 395 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
How many grams of Ag can be formed from 9.50 grams of Ag2O in the equation: 2Ag2O (s) ? 4Ag (s) + O2 (g)?
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