68

Oct. 28 1949
Sample Re #1
KReO4 (M.W. = 289.4)
0.520 grams in 5c.c. of water
Molarity = 0.520/0.2894x5 = 0.36 if all dissolved.
Sample Ke#2
KReO4 0.495 grams in 3 c.c. water
u(Hg199)/u(Hg201) = 0.9018
N#1 12 M NH4NO2 1.5 M Mn(NO3)2
N#2 12 M NH4NO3 0.8 M MnCl2
N#1 21 c.c. soln contains 11 grams of NH4NO3
[illegible] 10c.c of 4 M soln of Mn(NO3)2
Molarity of N = 15 M
" " Mn [illegible] = 1.9 M