Question

Types of reactions with examples and predicting products-give examples for each?

Answer 1

Stoichiometry- what are the steps?

Answer 2

oxidation numbers-list the rules?

Answer 3

percent by mass how is this calculated?

Answer 4

Types of reactions with examples and predicting products-give examples for each?

acid base
HCl + NaOH -> NaCl + H2O

combustion
C10H8 + 12 O2 ---> 10 CO2 + 4 H2O + heat

synthesis
8 Fe + S8 ---> 8 FeS

simgle displacement
Mg + 2 H2O ---> Mg(OH)2 + H2

double dis
Pb(NO3)2 + 2 KI ---> PbI2 + 2 KNO3

decomposition
2 H2O ---> 2 H2 + O2

Answer 5

thanks now will u help with my other questions listed pleaseeee

Answer 6

percent by mass
http://chemistry.about.com/od/workedchemistryproblems/a/mass-percent-worked-problem.htm

Answer 7

stoichiometry: problmes differ, but you always work in moles

then build ratios using the stoichiometric coefficients to find how many moles, n, will be produced or consumed

if, aA -> bB (a and b are stoichiometric coefficients)

\[\frac{ n _{A} }{ a }=\frac{ n _{B} }{ b }\]

Answer 8

oxidation numbers-list the rules?

basically follow the groups group 1 is always +1 group 2is always +2

O is always -2, H is always +1 .. form there you can find algebraically the rest by cancelling out the charges (if compounds are neutral)

Answer 9

thanks so much.... acid base properties compare/contrast? ph calcultions how is ph calculated?what elemet is the backbone for orons vs. unsatganic molecule? saturated hydrocarburated hydrocarbons?

Answer 10

sorry i gotta go to sleep, good luck !

Answer 11

thanks so much for ur help very appreciated