How would you balance the following equation: Zn + S --> ZnS?
Do I win 5 lbs?
This is something that you should be able to get quite good at it. If you made a purchase, and presented the cashier with a large denomination banknote, the value of your purchase + the value of your change MUST equal the value of the banknote. This is something we do every day, and every time we make an electronic transaction; your account is debited with the same amount of money that the shopkeeper is credited . All of these are examples of stoichiometry, which simply means in the right measure. For every reactant particle, there must be a corresponding product particle.