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प्रश्न
Fill in the following blanks :
60 g of carbon element are .............. moles of carbon atoms.
उत्तर
60g of carbon element are 5 moles of carbon atoms.
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संबंधित प्रश्न
Calculate the molar mass of the following substance:
Phosphorus molecule, P4 (atomic mass of phosphorus = 31)
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Sodium chloride
Fill in the blank
Avogadro's number is equal to ______
Calculate the weight of one molecule of oxygen .
[Avogadro's number = 6 x 1023, O = 16 ]
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]
Define or explain the term:
Gram atom
How many grams of Al are present in 0.2 mole of it?
Calculate the number of moles of CO2 which contain 8.00 g of O2
Calculate the number of atoms in the following:
52 moles of He
From the equation for burning of hydrogen and oxygen
\[\ce{2H2 + O2 -> 2H2O}\] (Steam)
Write down the number of mole (or moles) of steam obtained from 0.5 moles of oxygen.
