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A class is provided with the same mass of pb(II) nitrate but different masses of sodium iodide. the masses of lead II iodide produced will be determined by weighing.
What hypothesis could be written about this experiment?
Why is a diffraction pattern generated by an electron beam formed by electrons interfering with themselves rather than with one another
If a 0.140 mM solution of MnO41- has an absorbance of 0.210 at 525 nm in a 1.000 cm cell. What is the concentration of a MnO41- solution that has absorbance of 0.620 in the same cell at that wavelength
the reaction will be faster B. the reaction will be slower C. the reaction will take the same amount of time D. the speed of the reaction will never change unless a catalyst is added
The activity of an isolated sample of gas obtained from a basement containing radon-222 was found to be 8 pCi/L. This isotope has a half-life of 3.8 days. If no additional radon-222 entered the sample, how long would it take for the activity to de..
At a given temperature, the equlilibruin constant for the system studied in an experiement is 1.40x10^2. Suppose 100.0 ml of 2.00 x 10^-3 M KSCN was mixed with 100.0 ml of 2.00 x 10^-3 M Fe(NO3)3
If I have .0888g of potassium hydrogen sulfate, its density is 2.322g/mL and its molecular weight is 136.17g/mol how many mols do I have
A snack pack of potato chips holds 28 grams of chips. Based on your data, how much fat is present in a snack pack? In such a bag of chips, there are about 15 grams of carbohydrate and about 1 gram of protein.
1) What would be produced if water was used instead of methanol for the transesterification (fats/oils with strong alkali solution) 2) How does burning biodiesel produce no net CO2 in the atmosphere
you have a 5.68 g sample of a compound with the formula xcl2 where x is a metal cation. when the sample is treated with
what is the ph of a 0.15m solution of hcooh formic acid if the ka of formic acid hcooh is 1.8x10-4 at 25 degrees
Reaction of a single enantiomer of W produces a single enantiomer of Y as the only substitution product. X likewise reacts readily in water though at a slower rate than W; a chiral substitution product Z, C8H17OH, is again formed. Unlike W, howeve..
What are some of the differences between water obtained from a river that flows past farmland and water obtained five miles
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