Advertisements
Advertisements
प्रश्न
What is the mass of 1 mole of nitrogen atoms?
Advertisements
उत्तर
The mass of 1 mole of nitrogen atoms is 14 g.
APPEARS IN
संबंधित प्रश्न
Fill in the following blanks :
A mole represents an .............. number of particles of a substance.
How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 23 u)
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.
Calculate the number of moles and number of molecules present in 1.4 g of ethylene gas. What is the volume occupied by the same amount of ethylene?
Which of the following would weight the least?
[Atomic masses : Ag = 108, N - 14, O = 16,C = 12]
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]
N2 + 3H2 → 2NH3
(The atomic mass of nitrogen is 14, and that of hydrogen is 1)
1 mole of nitrogen (______ g) +
3 moles of hydrogen (______ g) →
2 moles of ammonia (______ g)
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.
8.8g carbon dioxide
