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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

What Does 6nano3 Represent ? - Chemistry

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प्रश्न

What does 6NaNO3 represent ?

एका वाक्यात उत्तर

उत्तर

6NaNO3 = 6 molecules of sodium nitrate.

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पाठ 4: Atoms, Molecules and Radicals - Exercise

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 4 Atoms, Molecules and Radicals
Exercise | Q 3.4

संबंधित प्रश्‍न

How many atoms are present in a H2S molecule?


What does 2H2S  represent ?


Write the molecular formulae of Calcium phosphate :


Write the molecular formulae of Aluminium sulphate :


The valency of sodium is one, write the molecular formula for sodium hydroxide ?


In hydrogen peroxide (H2O2), the proportion of hydrogen and oxygen by mass is :


Fill in the following blanks :

1 mole contains .............. atoms, molecules or ions of a substance.


If 1 gram of sulphur dioxide contains x molecules, how many molecules will be present in 1 gram of oxygen ?

(S = 32 u ; O = 16 u)


What is the number of electrons donated by a magnesium atom and number of electrons accepted by a sulphur atom during their chemical combination?


Write the molecular formulae of Magnesium nitride:


‘Atoms of the same element or different from Dalton’s atomic theory by the Modern Atomic Theory.
Give two examples each of –

  • Atoms of the same element
  • Atoms of different elements combining to form a molecule.

Fill in the blank:

A molecule of an element is _________.


Name the following:

A molecule of a compound containing two oxygen atoms and one nitrogen atom.


Name the following:

A non-metal which forms a polyatomic molecule with more than three atoms.


Molecule containing more than three atoms are known as ______.


Define molecule.


Express each of the following in kilograms

5.84 × 10−3 mg


Express each of the following in kilograms

5.873×10−21g


______ can be formed by the same or different kinds of atoms.


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