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What is the Value of Avogadro'S Number? - Chemistry

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प्रश्न

What is the value of Avogadro's number?

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उत्तर

The value of Avogadro's number is 6.023 x 1023.

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पाठ 5: Mole Concept And Stoichiometry - Exercise 1 [पृष्ठ ११५]

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फ्रँक Chemistry Part 2 [English] Class 10 ICSE
पाठ 5 Mole Concept And Stoichiometry
Exercise 1 | Q 5.2 | पृष्ठ ११५

संबंधित प्रश्‍न

What is the mass of 0.2 mole of oxygen atoms?


A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure

1) Find the number of moles of hydrogen present.

2) What weight of CO2 can the cylinder hold under similar conditions of temperature and pressure? (H = 1, C = 12, O = 16)

3) If the number of molecules of hydrogen in the cylinder is X, calculate the number of CO2 molecules in the cylinder under the same conditions of temperature and pressure.

4) State the law that helped you to arrive at the above result.


How many moles of O2 are there in 1.20 × 1022 oxygen molecules ?


How many moles are represented by 100 g of glucose, C6H12O6 ? (C = 12 u, H = 1 u, O = 16 u)


Explain with examples what is meant by a 'mole' of a substance.


Consider the following reaction and based on the reaction answer the questions that follow :
\[\ce{(NH4)2Cr2O7 ->[heat] N2(g) + 4H2O(g) + Cr2O3}\] 
Calculate :
(i) The quantity in moles of (NH4)2Cr2O7 if 63 gm of (NH4)2Cr2O7 is heated.
(ii) The quantity in moles of nitrogen formed.
(iii) The volume in litres or dm3 of N2evolved at STP.
(iv) The mass in grams of Cr2O3 formed at the same time
[Atomic masses : H = 1, Cr=52, N=14]


Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23)


Calculate the number of molecules in one Kg of calcium chloride.


How many grams are there in the following?

3 moles of chlorine molecule, Cl2.


Deduce the number of molecules of the following compound in the given quantity.

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