###### Answer: Chemistry B Quizes all in one

The law of conservation of mass dictates that the quantity of each element does not change in a chemical reaction. Thus each side of the chemical equation must represent the same quantity of any particular element. Likewise the charge is conserved in a chemical reaction. Therefore the same charge must be present on both sides of the balanced equation. One balances a chemical equation by changing the scalar number for each chemical formula. Simple chemical equations can be balanced by inspection that is by trial and error. Another techniqu…

The law of conservation of mass dictates that the quantity of each element does not change in a chemical reaction. Thus each side of the chemical equation must represent the same quantity of any particular element. Likewise the charge is conserved in a chemical reaction. Therefore the same charge must be present on both sides of the balanced equation. One balances a chemical equation by changing the scalar number for each chemical formula. Simple chemical equations can be balanced by inspection that is by trial and error. Another technique involves solving a system of linear equations. Balanced equations are written with smallest whole-number coefficients. If there is no coefficient before a chemical formula the coefficient is 1. The method of inspection can be outlined as putting a coefficient of 1 in front of the most complex chemical formula and putting the other coefficients before everything else such that both sides of the arrows have the same number of each atom. If any fractional coefficient exists multiply every coefficient with the smallest number required to make them whole typically the denominator of the fractional coefficient for a reaction with a single fractional coefficient. As an example seen in the above image the burning of methane would be balanced by putting a coefficient of 1 before the CH4: 1 CH4 + O2 → CO2 + H2O Since there is one carbon on each side of the arrow the first atom (carbon) is balanced. Looking at the next atom (hydrogen) the right-hand side has two atoms while the left-hand side has four. To balance the hydrogens 2 goes in front of the H2O which yields:

I = 1 2 [ c ( + 2 ) 2 + c ( − 2 ) 2 ] = 1 2 [ 4 c + 4 c ] = 4 c {\displaystyle I= {\frac { 1} { 2}} [c (+2)^ {2}+c (-2)^ { 2}]= {\frac {1} {2}} [4c +4c]=4c} Generally multivalent ions contribute strongly to the ionic strength.

Spectator ion – Wikipedia

Chemical equation – Wikipedia

Chemical equation – Wikipedia

Chemical equation – Wikipedia

Fri Aug 01 2003 14:30:00 GMT-0400 (Eastern Daylight Time) · This is known as the ionic equation. Ag + + NO 3 − + K + + Cl − AgCl ↓ + K + + NO 3 − {\displaystyle {\ce {Ag+ + NO3^- + K+ + Cl^- -> AgCl (v) + K+ + NO…