Advertisements
Advertisements
प्रश्न
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
Advertisements
उत्तर
12.044 × 1025 atoms of phosphorus
6.022 × 1023 atoms of phosphorus = 1 mole
12.044 × 1025 atoms of phosphorus = 12.044 × 1025/6.022 × 1023 = 199.9 moles or 200 moles
Hence, 12.044 × 1025 atoms of phosphorus have 200 moles.
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
Write the names of the elements present in the:-
Glucose
Write the names of the elements present in the:-
Acetic acid
Write the names of `"Ca"("NO"_3)_2` compounds :
State Dalton’s atomic theory.
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
What is an atom ? How do atoms usually exist ?
Define the following term:
Atom
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
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.
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus
Define the following term with an example.
Compound
Define the following term with an example.
Non-metal
Which of the following has maximum number of atoms?
The graphite refill used is pencil is made of element called ______.
The first scientific theory about atoms was given by J J. Thomson.
