Calculate the number of atoms in the following:
52 g of He
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Determine the number of molecules in a drop of water which weighs 0.09 g.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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The molecular formula for elemental sulphur is S8. In a sample of 5.12 g of sulphur:
How many moles of sulphur are present?
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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The molecular formula for elemental sulphur is S8.In a sample of 5.12 g of sulphur:
How many molecules and atoms are present?
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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If phosphorus is considered to contain P4 molecules, then calculate the number of moles in 100g of phosphorus?
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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A student puts his signature with a graphite pencil. If the mass of carbon in the signature is 10-12 g, calculate the number of carbon atoms in the signature.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Cost of Sugar (C12H22 O11) is Rs 40 per kg; calculate its cost per mole.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Which of the following weighs the least?
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Four grams of caustic soda contains ______.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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The number of molecules in 4.25 g of ammonia is ______.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Correct the statement, if required.
One mole of chlorine contains 6.023 x 1010 atoms of chlorine.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Correct the statement, if required.
The relative atomic mass of an element is the number of times one molecule of an element is heavier than `1/12` the mass of an atom of C12.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Correct the statement, if required.
Under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of atoms.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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[2] Chemical Bonding
Chapter: [2] Chemical Bonding
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Calculate the number of oxygen atoms in 0.10 mole of Na2CO3 . 10H2O.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Calculate the number of gram atoms in 4.6 gram of sodium.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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From the equation for burning of hydrogen and oxygen
\[\ce{2H2 + O2 -> 2H2O}\] (Steam)
Write down the number of mole (or moles) of steam obtained from 0.5 moles of oxygen.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Calculate the number of moles in 7g of nitrogen.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Solid ammonium dichromate decomposes as:
\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of (NH4)2Cr2O7.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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Solid ammonium dichromate decomposes as:
\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of nitrogen formed.
[5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
Chapter: [5.2] Relative Atomic Mass, Relative Molecular Mass and Mole Concept
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