The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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What is the value of Avogadro's number?
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Define the term.
Molar volume
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Define the term Relative atomic mass.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Define the term:
Avogadro’s number
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Explain the term:
Gram atom
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Explain the term:
Gram mole
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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What do you understand by the term mole? How many elementary units are in one mole of a substance?
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Fill in the blank
One gram atom of an element contains ______ atoms.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Fill in the blank.
One a.m.u. is the mass of ______ atom of C12.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Fill in the blank
Avogadro's number is equal to ______
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Calculate the number of molecules in 12.8g of sulphur dioxide gas. Take Avogadro's number as 6 x 1023.
[S = 32, 0 = 16 ]
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Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
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Two oxides of a metal (M) have 20.12% and 11.19% oxygen. The formula of the first oxide is MO. Determine the formula of the second oxide.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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A student puts his signature with graphite pencil. If the mass of carbon in the signature is 10-12 g. Calculate the number of carbon atoms in the signature.
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A flask contains 3.2g of sulphur dioxide.Calculate the following : The moles of sulphur dioxide present in the flask.
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Given that the relative molecular mass of copper oxide is 80, what volume of ammonia (measured at STP) is required to completely reduce 120g of copper oxide? The equation for the reaction is :
3CuO + 2NH3 → 3Cu + 3H2O + N2
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Calculate the number of moles and number of molecules present in 1.4 g of ethylene gas. What is the volume occupied by the same amount of ethylene?
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A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
What volume of dinitrogen oxide is produced at the same time as 8.96 L of steam?
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