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You have gone back in time and are working with Dalton on a table of relative masses. Following are his data:
0.602g gas A reacts with 0.295g gas B
0.172g gas B reacts with 0.401g gas C
0.320g gas A reacts with 0.374g gas C
a) Assuming simplest formulas (AB,BC,AC), find the relative masses in whole numbers for A,B, and C.
The iron content of hemoglobin can be determined by converting the iron to Fe2+ and titrating using MnO4 -. A 5.0 g sample of hemoglobin requires 21.6 mL of 0.00310 M potassium permanganate. What is the percent of iron in the hemoglobin sample?
A student carries out a reaction of Mg with HCl at 20'C and collects 21 cm3 H2 gas measured at a pressure of 751 torr. How many moles does it represent
If the initial concentration of N2O4 is 0.50 M, and no NO2 is initially present, what is the equilibrium concentration of N2O4? Kc = 0.0059 at 298 K N2O4 (g) 2NO2 (g)
The equilibrium constant (KP) is 0.13 at a particular temperature for the reaction: N2O4(g) ? 2NO2(g) Given the following sets of initial conditions, what is the net change that must occur for the reaction to reach equilibrium
The equilibrium constant Kp for the reaction ; CCl4(g) C(s) + 2Cl2(g) at 700 celcius is 0.76 atm. Determine the initial pressure of carbon tetrachloride
What are the stereochemical configurations of the two diastereomers of (2R,4S)-2,4-hexanediol
a 4 g sample of the hydrated crystal baoh2bull chih2o is heated until all the water is removed. the remaining solid
Problem- What concentration of the lead ion Pb^2+ must be exceeded to precipitate PbBr2 from a solution that is 1.00 x 10^-2M in the bromide ion Br-? Ksp for lead bromide is 4.67 x 10-6
Explain what property of the sodium salt of methyl salicylate, as compared to the disodium salt of salicylic acid, made it possible to visually gauge the progress of this basic hydrolysis of methylsalicylate
Determine the number of moles of O2 produced by the decomposition of 426 g of NaClO3
Why are monochromators (prism or grating monochromators) used in scanning instruments as opposed to absorption filters for
A sample of hydrogen is collected in a eudiometer at a temp of 23C. If the atm is 735 torr, what is the pressure of the carbon dioxide
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