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

# Quantitative Compo

Term | Definition |
---|---|

Avogado’s Number | The number of formula units in one mole. 6.022 X 10²³ |

Empirical formula | The chemical formula that gives the smallest whole-number ratio of atoms in a compound – that is, the relative number of atoms of each element in the compound; also known as the simplest formula. |

Molar mass | The mass of Avogadro’s number of atoms or molecules. The sum of the atomic masses of all the atoms in an element, compound, or ion. The mass of a mole of any formula unit. It is also known as the molecular weight. |

Mole | The amount of a substance containing the same number of formula units (6.022 X 10²³) as there are in exactly 12 g of ¹²C. One of these is equal to the molar mass in grams of any substance. |

Molecular formula | The total number of atoms of each element present in one molecule of a compound; also known as the true formula. |

Percent composition of a compound | The mass percent represented by each element in a compound. 1) Calculate the molar mass. 2) Divide the total mass of each element in the formula by the molar mass and multiply by 100. |

¹²C | The reference isotope for atomic masses. |

Created by:
NicholeBarber