PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free Demo1. \(N_2+3H_2→2NH_3\)
(The atomic mass of nitrogen is \(14\), and that of hydrogen is \(1\))
\(1\) mole of nitrogen (_______g) +
\(3\) moles of hydrogen ( _________ g) →
\(2\) moles of ammonia ( _________ g)
The formula to find mass of an element from mole is,
\(\text{Mass of element}\) \(=\)\(\ (\text {X} )\ \cdot\ (\text {Atomic mass of the element} )\)
Where,
X is
Y is
Therefore,
\(1\) \(mole\) of nitrogen (\(N_2\)):
\(1\) \(mole\) of nitrogen (\(N_2\)) \(=\)
\(3\) \(moles\) of hydrogen (\(H_2\)):
\(3\) \(moles\) of hydrogen (\(H_2\)) \(=\)
\(2\) \(moles\) of ammonia (\(NH_3\)):
\(2\) \(moles\) of ammonia (\(NH_3\)) \(=\)
2. Give the salient features of “Modern atomic theory”.
- An atom is no longer indivisible.
- Atomic can differ amongst atoms of the .
- Atoms of different elements may have the .
- Atoms of one element can be transmuted into atoms of other elements. In other words, an atom is no longer indestructible.
- Atoms may not always combine in a simple whole-number ratio.
- The atom is the smallest particle involved in a chemical reaction.
- The mass of an atom can be converted into . [].
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