Chem 12.1- The Arithmetic Of Equations

The coefficients or a balanced chemical equation indicate the relative number of ___________ of reactants and products.

All stoichiometric calculations begin with a _____.

Only ________ and ________ are conserved in every reaction; moles, volumes, and representative particles may not be.

In solving stoichiometric problems, conversion factors relating moles of reactants to _______ of products are used.

If you assume ___________, the balanced equation also tells you about the volume of gases.

The coefficient in a balanced chemical equation can be used to form mole ratios relating reactants to products. NT, AT, ST

The coefficients in a balanced chemical equation tell the relative volumes of reactants and products, expressed in any suitable unit of volume. NT, AT, ST

To calculate the mass of a molecule in grams, you can use the molar mass and Avogadro number. NT, AT, ST

Because the mass of the reactants equals the mass of the products of a reaction the number of moles will be conserved. NT, AT, ST

If the ratio of molecules in the reaction 2A₂+ B₂ ——-> 2A₂ B is 2:1:2 we can predict that the 4 molecules of A₂ react with 2 molecules B₂ to produce 4 molecules of A₂B. NT, AT, ST

One mole of any gas occupies a volume of 22.4 L. NT, AT, ST

Stoiciometry

Product

Coefficient

6.02 * 10^23

0 degrees Celsius, 101.3 kPa

Interpret the following equations using moles, molecules, and volumes (assume STP). Compare the mass of the reactants to the mass of the product. 2N₂(g) + 3O₂(g) ——> 2N₂O₃(g)

How many molecules of chlorine gas will be required to react with sufficient iron to produce 14 molecules of iron (III) chloride? 2Fe(s) + 3Cl₂(g) ——-> 2FeCl₃(g)