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URI CHM 103 EXAM 1 Exam Questions and answers ()
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URI CHM 103 EXAM 1 Exam Questions and answers (202472025)Density - D=mass/volume
% error - (Theory-actual)(100%)/theory
%accuracy - Actual(100%)/theory
Halogens - F, Cl, Br, I, At
Molecular Weight - Sum of atomic weights
Atomic Weight Formula - AW=E(isotope%)(isotope mass)(1/100)
Avagadros number - 6.022x10^23
1 mole volume formula - 1 mol vol= (1mol)(molecular weight g/mol) (density g/mL)
%mass of atom of compound - (Mass of atom)(100%)/(mass of compound)
Electrons - 1/1836 amu
-1 charge
Outside nucleus
Neutrons - In nucleus
No charge
1 amu
1 up & 2 down quarks
Free neutrons decay
Weak Force - Hold together neutrons
Protons - In nucleus
+1 charge
1 amu
2 up & 1 down quarks
Strong Force - Holds protons to neutrons
Mass number - Protons + neutrons
Atomic number - # protons and # electrons
U - Uranium
Th - Thorium
, Sn - Tin
Sb - Antimony
Pb - Lead
Hg - Mercury
Au - Gold
Ag - Silver
Kr - Krypton
Ar - Argon
Ne - Neon
He - Helium
Br - Bromine
Cl - Chlorine
F - Flourine
Se - Selenium
S - Sulfer
O - Oxygen
As - Arsenic
P - Phosphorus
N - Nitrogen
Ge - Germanium
Si - Silicon
C - Carbon
Ga - Gallium
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