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Calculate the terminal velocity of particles with a density of 1.3 g/cm3 and a diameter of 250 microns falling through water at 200 C
Cesium-131 is a short lived radioisotope (t 1/2 = 9.7 days) used to treat prostate cancer. How much therapeutic strength does a cesium-131 source lose over 45.0 days?
A piece of titanium metal with unknown mass is heated in boiling water to a temp of 99C. It is removed from the boiling water and dropped into a coffee cup calorimeter containing 83.5g water.
Two seperate samples of argon gas are held seperate chambers connected with a valve in the middle. Chamber A has a bolume of 2.00 L, and contains 120 g of Ar at 650 K
compare the purity/identity of the samples from the extraction with the purity of the samples obtained from column chromatography.
If the diameter of a sodium atom is 3.14×10-8 , how many sodium atoms would fit along a line exactly 2.00 inch long?
Rubidium has two naturally occurring isotopes: Rb-85 with mass 84.9118 amu and a natural abundance of 72.17%, and Rb-87 with mass 86.9092 amu and a natural abundance of 27.83%.
If the silver -silver chloride electrode is replaced with a saturated calomel electrode, what is the new cell voltage?
calculate the actual yield of magnesium nitrate formed from 113.9 g of magnesium and excess copper(II) nitrate.
A 32.65-g sample of a solid is placed in a flask. Liquid toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 50.00 ml.
Which of the following is correct? A) Solubility is the concentration of unsaturated ions in solution. B) Ksp is the same as the solubility. C) Ksp is an equilibrium constant and solubility is the concentration of a saturated solution
If 12.5 g of sucrose is added to 225 g of coffee by how much will the boiling point change upon adding the sugar? Assume the Bp of coffee is the same as pour water.m.
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water,
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