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Chemistry 141 Exam 1 Questions And Answers Rated A+ New Update Assured Satisfaction
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Chemistry 141 Exam 1 Questions And Answers Rated A+ New Update Assured Satisfaction
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Chemistry 141 Exam 1-ate=ic
-ite=ous - ANS-Oxoanionic acid
+1= Group 1, Cu, Ag, Tl
+2= Group 2, Mn, Ni, Fe, Co, Group 12, Sn, Pb, Cu
-3= Group 15
-2= Group 16
-1= Group 17
3+= Sc, Y, V, Fe, Co, Ni, Cr, Group 13
4+= Ti, Zr, Mn, Sn, Pb
5+= V - ANS-Ionic Charges
+2 charge, mass equals He nucleus - ANS-alpha particle
1 atom of He=4.003 amu
1 mole of He=4.003 g
Molar mass= g/mol - ANS-Molar Mass
1. Write correct formulas for reactants and products including physical state
2. Check whether the expression is balanced by counting atoms on each side of the reaction
3. Balance an element that appears in only one reactant and product first
4. Choose coefficients to balance other elements as needed - ANS-Balancing chemical
equations
10^-1 - ANS-Deci
10^-12 - ANS-Pico
10^-15 - ANS-Femto
10^-18 - ANS-Atto
10^-2 - ANS-Centi
10^-21 - ANS-Zepto
10^-24 - ANS-Yocto
10^-3 - ANS-Milli
, 10^-6 - ANS-Micro
10^-9 - ANS-Nano
10^1 - ANS-Deca
10^12 - ANS-Terra
10^15 - ANS-Peta
10^18 - ANS-Exa
10^2 - ANS-Hecto
10^21 - ANS-Zetta
10^24 - ANS-Yotta
10^3 - ANS-Kilo
10^6 - ANS-Mega
10^9 - ANS-Giga
6.022*10^23 mol^-1
6.022*10^23 atoms/mol
6.022*10^23 molecules/mol - ANS-Avogadro's Number
A mole is a unit for a specific quantity of a substance
1 mol= 6.022*10^23 particles - ANS-Mole
Ag - ANS-Silver
all digits known with certainty plus one uncertain digit
all nonzeros are significant
Zeros after decimal unless placeholders, in the middle of the number are significant -
ANS-Significant Figures
an organic compound whose molecule are composed only of C and H atoms -
ANS-Hydrocarbons
as a star collapses, nuclei begin to disintegrate into protons and neutrons
individual neutrons may collide and fuse with atomic nuclei in a process called neutron capture -
ANS-Radioactive Elements
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