Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# Stoichiometrics-2

### Digging Into It

Question | Answer |
---|---|

4 Steps to solving Stoichiometric problems are: | 1. Balance equation. 2. Convert units to moles. 3. Using moles ratio, calculate the moles of substance that is yielded. 4. Convert to desired units |

The constituent parts of a chemical equation are: | Never destroyed or lost |

The yield of a reaction must: | Exactly correspond to the original reagents |

To balance a chemical equation we must: | place coefficients before the various molecules & atoms to insure they balance on both sides of the equation |

The process of balancing an equation is essentially | trial and error |

The gram formula mass of a compound (or element) is | the mass of one mole of the compound |

Grams/mole, or the gram formula mass can be found by | adding the atomic weights of every atom in the compound |

A mole of a 12 amu (atomic mass unit) carbon atom will weight now many grams? | 12 grams |

Why is the Ideal Gas law useful? | It provides a handy means of converting between moles and a gas provided you know certain qualities of the gas |

What is a formula unit? | The smallest unit of a substance that still retains that substance's properties and is the simplest way to write the formula of the substance without coefficients |

(MolaRity) The equation to solve for moles yields would look like what? | Moles=molarity x liters of solution |

(MolaLity) The equation to solve for moles yields would look like what? | Moles=molality x kilograms of solution |

The mole ratio describes exactly what the name suggests and that is | the molar ratio at which a reaction will proceed |

Created by:
SG Luther