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Math
Most accurate calculation of
e
:
(
1
+
9
−
4
42
)
3
2
85
{\displaystyle {\text{Most accurate calculation of }}e{\text{:}}(1+9^{-4^{42}})^{3^{2^{85}}}}
2
1024
−
1
: Maximum integer storable in a 1024 bit number saving system
{\displaystyle 2^{1024}-1{\text{: Maximum integer storable in a 1024 bit number saving system }}}
Chemistry
O
→
A
d
d
a
h
y
d
r
o
g
e
n
a
t
o
m
HO
Hydroxide
→
A
d
d
a
n
o
t
h
e
r
h
y
d
r
o
g
e
n
a
t
o
m
H
2
O
Water
{\displaystyle {\ce {O->[Add\ a\ hydrogen\ atom]{\underset {Hydroxide}{HO}}->[Add\ another\ hydrogen\ atom]{\underset {Water}{H2O}}}}}
NaCl
Sodium
chloride
+
H
2
SO
4
Sulfuric
acid
⟶
NaHSO
4
Sodium
hydrogen
−
sulfate
+
HCl
Hydrogen
chloride
{\displaystyle {\ce {{\underset {Sodium\ chloride}{NaCl}}+{\underset {Sulfuric\ acid}{H2SO4}}->{\underset {Sodium\ hydrogen-sulfate}{NaHSO4}}+{\underset {Hydrogen\ chloride}{HCl}}}}}
Eu
88
63
151
→
a
Pm
86
61
147
→
b
−
Sm
85
62
147
→
a
60
143
Nd
83
{\displaystyle {\ce {^{151}_{63}Eu_{88}->[a] ^{147}_{61}Pm_{86}->[b-] ^{147}_{62}Sm_{85}->[a]^{143}_{60}Nd_{83}}}}
Be
4
4
8
→
a
2
He
2
2
4
{\displaystyle {\ce {^8_4Be_4 ->[a] 2 ^4_2He_2}}}
![{\displaystyle {\ce {O->[Add\ a\ hydrogen\ atom]{\underset {Hydroxide}{HO}}->[Add\ another\ hydrogen\ atom]{\underset {Water}{H2O}}}}}](/media/api/rest_v1/media/math/render/svg/507ae09d6ca9a9f1da2e0efc34d7e6d26d586c28)
![{\displaystyle {\ce {^{151}_{63}Eu_{88}->[a] ^{147}_{61}Pm_{86}->[b-] ^{147}_{62}Sm_{85}->[a]^{143}_{60}Nd_{83}}}}](/media/api/rest_v1/media/math/render/svg/1f667e4263918e2e840a689f9e97c6254de51093)
![{\displaystyle {\ce {^8_4Be_4 ->[a] 2 ^4_2He_2}}}](/media/api/rest_v1/media/math/render/svg/d6220d82eed34d30efe2c1e2c87c34dfc6b54588)