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Naturally occurring magnesium has an atomic mass of 24.312 amu and consists of 3 isotopes. The major isotope Mg-24, natural abundance 78.99%, relative atomic mass 23.98504 amu. The next most abundant isotope Mg-26, relative atomic mass 25.98259 amu. The third one, Mg-25, whose natural abundance is in the ratio of 0.9083 to that of Mg-26. Find the relative atomic mass of Mg-25.
what is the density in gml of a sphere with a diameter of 4cm and a mass of 1.35 grams? what is the percent error if
Draw the organic product(s) of the reaction of p-methylbenzoic acid with aqueous sodium hydroxide
A mixture of sodium bromide and sodium iodide weighs 1.620 g. when treated with excess silver nitrate it yields a mixture of silver bromide and silver iodide which weighs 2.822 g. how many grams of sodium iodide was in the original mixture
Using the thermochemical data given for NO2 and N2O4 in class, determine the fraction of N2O4 that will dissociate into two NO2 molecules if one mole of pure N2O4 is introduced to a 10 liter constant volume,
What is the pH of a solution in which 323 mL of HCl(g), measured at 26.8 degrees Celsius and 1.02 atm, is dissolved in 1.5 L of aqueous solution?
The reaction is Cisplatin + H2O -> cisplatinOH2+ + Cl- Supposing the concentration of cisplatin in the bloodstream of a cancer patient is 4.73*10^-4 M. What will be the concentration after 24 hrs?
what fraction of the day's energy does walking one hour represent? How many kilograms of water would have to be evaporated if this were the only means of heat loss?
Consider the titration of 30.0mL of 0.050 M NH_3 with 0.025 M HCl. Calculate the pH after the following volumes of titrant have been added. a) 0mL b)20.0 c)59.3 d)60 e)72.6 f)73.1
imagine that you have two iron blocks one with a mass 226 g at a temperature of 46.0 oc and another with a mass 380 g
What is the direct effects of bromination of vanillin. Debating between 5-bromovanillin and 6-bromovanillin. One would expect 5-bromovanillin in the meta position based on stability of all substituents
How many milliliters of 0.0759 M NaOH are required to titrate 25.0 mL of 0.0896 M HBr to the equivalence point?
Nitric oxide reacts with chlorine to form nitrosyl chloride, NOCl. Use the following data to determine the rate equation for the reaction.
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