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QUIZ- Avigadro's number
Questions in this quiz (9)
1What is a mole?
- AAn animal
- B6.02 x10^23 atoms
- CA gram of an element
2What is avigadro's number?
- AAvigadro's constant or number is the number of atoms in a mole; 6.02 x10^23
- B07865543290
3What is meant by 'Structure of matter'?
- AHow different matter is created:
atoms ---> molecules ---> bulk compound
atoms ---> bulk element
atoms ---> ions ---> bulk ionic compound - BHow elements are structured in different temperatures
- AHow different matter is created:
4What is RAM?
- ARelative atomic mass; the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12. RAM is averaged over the different isotopes.
- BMemory in my computer
5Find the RAM of Carbon, Magnesium and Francium respectively
- A6, 12, 87
- B12, 24, 223
6What is meant by molecular mass?
- AMolecular mass is the total mass of all the molar masses of atoms in a molecule
- BMolecular mass is the mass of a molecule of CO2
- CMolecular mass is the mass of one atom in a mole
7What is the difference between RAM and AMU?
- AAtomic Mass Units make up the Relative Atomic Mass
- BRelative Atomic Mass is the average mass of an element, when considering all its isotopes. Atomic Mass Unit is one twelfth of a carbon atom.
- CRelative Atomic Mass is the Atomic Mass Unit divided by the number of atoms involved
8What is the formula for the number of moles?
- AMoles= Total Mass/ Molecular Mass
- BMoles= Total Mass/ Relative Atomic Mass
- CMoles = Total Mass/ 6.02x10^23
9Find the Empirical Formula for NaOH + P4 +H2O --> PH3 + NaH2PO2
- A3NaOH + P4 +6H2O --> PH3 + 3NaH2PO2
- B3NaOH + P4 +3H2O --> PH3 + 3NaH2PO2
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- Description
- Chemistry (Unit 1+11 - Stoichiometry ) Quiz on QUIZ- Avigadro's number, created by yuvalgalshohet on 30/03/2014.
- Author
- yuvalgalshohet
- Language
- English
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