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A cube of a gold with a volume of 59 cm3 has a mass of 980 g. The density of pure gold is 19.3 g/cm3. What is the percent error of the measured density?
Aqueous solutions of sodium thiosulfate, Na2SO3, are used as an antidote to some snakebites. How many moles of sodium ions are found in 10.0 mL of a 0.15 M solution of Na2S2O3?
Calculate the pH of each of the following solutions. (a) 0.500 M HONH2 (Kb = 1.1 10-8) (b) 0.500 M HONH3Cl
When cyclopentane is exposed to Br2 in the presence of light, reaction occurs. Write the formulas of all possible monobromination products. Draw molecule by placing atoms on grid.
Determine what is the longest possible wavelength of light that could ionize an atom of bismuth if the first ionization energy of bismuth is Ei1 = +70 kJ/mol.?
Lindane is a popular pesticide throughout the south because it is a persistent chemical (i.e. it remains in the environment and offers protection for a long period of time)
Compare and contrast diethyl ether as a general anesthetic to the modern gaseous ther general anesthetics used today. What are the benefits
if 836.8 Joules are added to 25 grams ammonia at 37 degrees Celsius, what will the final temperature be?
How many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated?
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 268 {rm torr}. Pure pentane and hexane have vapor pressures of 425 {rm torr} and 151 {rm torr}, respectively, at room temperature. What i..
a 200-g sample of a metal absorbs 500 J, and its temperature rises by 30 degrees celsius. what is the specific heat of the metal?
provide the structures for the two products indicate two features of the spectrum (ie hydrogen ratio, peaks, classification of peak (singlet doublet etc) that would justify assigning the structure.
How many moles of O2 are needed to consume 0.52 mol of Mg in the following unbalanced reaction? Mg + O2-> MgO
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