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Give the Empirical Formula of : Benzene C6h6

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प्रश्न

Give the empirical formula of : Benzene C6H6

एक पंक्ति में उत्तर
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उत्तर

The emperical formula of the benzene (C6H6) is “CH”.

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अध्याय 1: The Language of Chemistry - Exercise 1 (C) [पृष्ठ १९]

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सेलिना Concise Chemistry [English] Class 9 ICSE
अध्याय 1 The Language of Chemistry
Exercise 1 (C) | Q 13.1 | पृष्ठ १९

संबंधित प्रश्न

Write down the formulae of sodium sulphide.


Write the chemical formula of the Calcium carbonate.


What is the significance of the formula of a substance ?


Which of the following represents a correct chemical formula ?


An element A forms an oxide A2O5.

What will be the formula of chloride of A ?


Give the formula and valency of:
aluminium ………………. .


XCl2 is the chloride of a metal X. State the formula of the sulphate and the hydroxide of the metal X.


Write the formula of the following compound: 
Potassium sulphite

Write the formula of the following compound:

Potassium bicarbonate


Write the formula of the following compound:

Magnesium hydroxide


Write the formula of the following compound:

Aluminium carbonate


Write the formula of the following compound:

Tetra amine copper [II] sulphate


Write the formula of the following compound:

Iron [II] sulphide


Write the formula of the following compound:

Iron [III] sulphide


Write the formula of the following compound:

Lead [II] sulphate


Define the term Relative molecular mass. State why indirect methods are utilised to determine the absolute mass of an atom. Explain in brief the indirect method used.


State of the following formula of a compound is incorrect. Incorrectly write the correct formula.

NaZnO2


State of the following formula of a compound is incorrect. Incorrectly write the correct formula.

NaO


Complete the following crossword puzzle (Fig. 3.1) by using the name of the chemical elements. Use the data given in Table.

  Across   Down
2 The element used by Rutherford during his α–scattering experiment 1 A white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air
3 An element which forms rust on exposure to moist air 4 Both brass and bronze are alloys of the element
5 A very reactive non–metal stored under water 6 The metal which exists in the liquid state at room temperature
6 Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with burning splinter produces a pop sound. 8 An element with symbol Pb


Play a game for writing formula.

Example 2: A low-cost model for writing formulae: Take empty blister packs of medicines. Cut them in groups according to the valency of the element, as shown in the figure. Now, you can make formulae by fixing one type of ion into other.

For example:

The formula for sodium sulphate:

2 sodium ions can be fixed on one sulphate ion.

Hence, the formula will be Na2SO4.

Do it yourself:

Now, write the formula of sodium phosphate.


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