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The density of normal water (the hydrogen do not have neurons) at 20degrees celsius is .9982 g/mL. Calculate the density you would expect for heavy water by assuming that deuterium (^2H or ^2D) is the same size as normal hydrogen (^1H) when it is part of the water.
a)how are a beta particle and an electron similar? b)what symbols are used for beta particles? c)what is the source of a beta particle
A solution is prepared by measuring 33 mL of the concentrated HCl, adding it to water, and diluting to 0.500 L. Calculate the approximate molarity of this solution from the volume, percent composition, and density.
a 1L flask contained 2g N2, 0.4g H2 and 9g O2 at 27c. what is the total pressure in the flask?
For a given sample of {rm CH_3OH}, the enthalpy change on reaction is 19.0 kJ. How many grams of hydrogen gas are produced?
Solid CaF2 is shaken with a 0.010M solution of NaF. What will be the concentration of Ca2+ ion in the resultant saturated solution? (Ksp for CaF2 = 4.0 x 10-11)
Draw skeletal structure of major product for 1-iodo-4-methyl cyclohexane when reacted with NaSCh2Ch3
A solution contains .10 M iodide ion, I- and 0.10 M carbonate ion, CO32-.... a. If solid Pb(NO3)2 is slowly added to the solution which salt will precipitate first, PbI2 or PbCO3? What will the concentration of the first ion that precipitates when..
Assume an average minimum daily requirement for calcium is 1150 mg. Calculate what percentage of your daily requirements could be met by drinking 1.0L of your local water.
oxalic acid dihydrate (H2 C2 04). 2H20 (formula weight = 126 g/mol) is sometimes used to standardize NaOH solutions. How many grams of this acid will be required to titrate 45.0 mL of 0.18 M NaOH solution
Acetylcholine is a neurotransmitter and its concentration in the blood is quantitatively determined from the pH changes that accompany its hydrolysis by the enzyme, acetylcholinesterase
Calculate H of this reaction per mole of H2SO4 and KOH reacted. (Assume that the total volume is the sum of the individual volumes and that the density and specific heat capacity of the solution are the same as for pure water
Calculate pCd2 at each of the following points in the titration of 50.00 mL of 0.0060 M Cd2 with 0.0060 M EDTA in the presence of the auxiliary complexing agent NH3
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