# Counting Atoms: Question Preview (ID: 21551)

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How many elements are in the molecule H2O? |
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a) 1 | b) 2 | c) 3 | d) 4 | |

How many atoms are in H2O? |
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a) 1 | b) 2 | c) 3 | d) 4 | |

How many atoms of Hydrogen are in C2H4O2? |
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a) 2 | b) 4 | c) 8 | d) 6 | |

How many elements are in C2H2O2 |
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a) 1 | b) 2 | c) 3 | d) 4 | |

How many Lithium atoms are in Li2O4? |
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a) 4 | b) 6 | c) 8 | d) 2 | |

Which element has 4 atoms in BaO4H2? |
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a) Ba | b) O | c) H | d) None | |

How many Ca atoms are in Ca3(CO2)3? |
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a) 1 | b) 2 | c) 3 | d) 4 | |

How many C atoms are in Ca3(CO2)3? |
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a) 1 | b) 2 | c) 3 | d) 4 | |

How many O atoms are in Ca3(CO2)3? |
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a) 2 | b) 4 | c) 6 | d) 8 | |

How many Silver Atoms are in 2Ag2Cr2O7 |
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a) 2 | b) 4 | c) 6 | d) 8 | |

How many Chromium atoms are in Ag2(Cr2O7)4 |
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a) 2 | b) 4 | c) 6 | d) 8 | |

How many Oxygen atoms are in 2Ag2Cr2O7 |
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a) 10 | b) 21 | c) 14 | d) 16 | |

How many Silver atoms are in Ag2Cr2O7 |
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a) 1 | b) 2 | c) 3 | d) 4 | |

How many elements are in AlCl6K3? |
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a) 1 | b) 2 | c) 3 | d) 4 | |

How many atoms are in AlCl6K3? |
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a) 6 | b) 8 | c) 10 | d) 12 | |

Which element in not in the molecule AlCl6K3? |
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a) Potassium | b) Aluminum | c) Chlorine | d) Iodine | |

How many Aluminum atoms are in 3AlCl6K3 |
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a) 1 | b) 2 | c) 3 | d) 4 | |

Which elements have the same number of atoms in AlCl6K3? |
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a) Aluminum and Chlorine | b) Aluminum and Potassium | c) Chlorine and Potassium | d) None of them | |

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