# GUIDES OF STOICH

## WHAT IS STOICHIOMENTRY

is a section of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data

## First step

MY REACTION:Lead(II) Nitrate + sodium Bromide

My reaction is a double replacement, so we have to remember to switch the metal with a metal or the nonmetal with a nonmetal.also remember to balance the equation on both sides they also have to include state of matter. witch is aq,s,I

## THE ELEMENTS MOLAR MASS: 367.01 g/mol

## HOW TO DO A CONVERSTION

The easiest way to do stoichimotry calculation involves using conversion factors. A conversion factor is a ratio (or fraction) which represents the relationship between two different units. A conversion factor is always equal to 1.

## how to do a mole to mole converstion

when you balance the equation it is important to think if it in terms of atoms of each element. ## LIMITING and EXCESS REACTION

limited reaction is the reactant in a chemical reaction that limits the amount of product that can be formed. The reaction will stop when all of the limiting reactant is consumed.the excess reaction is the reactant in a chemical reaction that remains when a reaction stops when the limiting reactant is completely consumed. The excess reactant remains because there is nothing with which it can react. For example when you make smores there where only a number of amount of that we could make and having the same fraction of marshmallows to muckrakers to chocolates. ## steps

First you balance the equation for the chemical reaction.Then convert all of the giving info into moles.Then you calculate the mole ratio from the giving info and compare it to the acual ratio. Then use the amount of limited reation to calculate the amount of product production.

## THEORETICAL + PERCENT yield

Your limited reaction is you theoretical yield. The percent yield is what you find when you divide the actual yield 