Advertisements
Advertisements
प्रश्न
Find the mass of 2 moles of nitrogen atoms.
उत्तर
Given moles on N atom = 2 moles
Gram atomic mass of nitrogen atoms = 14g
Therefore, 14g of nitrogen atoms = 1 mole of nitrogen atoms
So, 2 moles of nitrogen atoms = 14 × 2g of nitrogen atoms
Hence, 2 moles of nitrogen atoms weigh 28g.
APPEARS IN
संबंधित प्रश्न
If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.
WRITE SHORT ANSWER
Name three inert gases.
Write the names of the elements present in the following compound.
Common salt
Define: Ions
Give two examples for each of ionic and covalent bond.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the charge on the particle ?
Write the full form of IUPAC.
What are the building blocks of matter ?
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
- ammonium
- bisulphate
- carbonate
state the group of atoms present in each radical.
The smallest particle of matter that can exist by itself is ______.
The smaller particles found in the atom is called ______.
Name the sub-atomic particles.
Define the following term with an example.
Compound
Define the following term with an example.
Metal
______ is the smallest particle of an element.
The number of atoms present in a molecule is called its ______.
What is the fundamental particle of an element?