Determine the number of molecules in a drop of water which weighs 0.09 g. - Chemistry

Determine the number of molecules in a drop of water which weighs 0.09 g.

संख्यात्मक

18 g of water has number of molecules = 6.02 x 10²³

∴ 0.09 g of water will have no. of molecules = `(6.02 xx 10^23)/18 xx 9/100`

= 3.01 x 10²¹molecules

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अध्याय 5: Mole concept and Stoichiometry - Exercise 5B [पृष्ठ ८४]

अध्याय 5 Mole concept and Stoichiometry
Exercise 5B | Q 21 | पृष्ठ ८४

Choose the correct answer from the options given below:

The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is:

[Given that H = 1, O = 16]

Define mole. What are the two things that a mole represents.

Prove the Following :
One mole of any gas contains th e same number of molecules.

Explain the term : Gram mole

Calculate the weight of one molecule of oxygen .
[Avogadro's number = 6 x 1023, O = 16 ]

A flask contains 3.2g of sulphur dioxide.Calculate the following : The moles of sulphur dioxide present in the flask.

Define or explain the term:

Gram atom

Find the number of molecules in 73 g of HCl.

Find the number of molecules in 3.2 g of SO₂.

Calculate the number of particles in 0.1 mole of any substance.