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1
answer
Calculate the number of aluminium ions present in 0.051g of aluminium oxide.
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Saumya
|
8
views
class9
ncert
atoms
and
molecules
1
answer
Calculate the number of molecules of sulphur (S_8) present in 16g of solid sulphur.
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Saumya
|
4
views
class9
ncert
atoms
and
molecules
1
answer
What is the mass of: (a) 0.2 mole of oxygen atoms?
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Saumya
|
3
views
class9
ncert
atoms
and
molecules
1
answer
Convert into mole. (a) 12g of oxygen gas
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
6
views
class9
ncert
atoms
and
molecules
1
answer
What is the mass of:- (a) 1 mole of nitrogen atoms?
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
7
views
class9
ncert
atoms
and
molecules
1
answer
Calculate the molar mass of the following substances.
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
15
views
class9
ncert
atoms
and
molecules
1
answer
Give the names of the elements present in the following compounds.
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
5
views
class9
ncert
atoms
and
molecules
1
answer
Write the chemical formula of the following.
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
4
views
class9
ncert
atoms
and
molecules
1
answer
What are polyatomic ions? Give examples.
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
4
views
class9
ncert
atoms
and
molecules
1
answer
When 3.0g of carbon is burnt in 8.00 g of oxygen, 11.00 g of carbon dioxide is produced.
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
7
views
class9
ncert
atoms
and
molecules
1
answer
A 0.24g sample of compound of oxygen and boron was found by analysis to contain 0.096g of boron and 0.144g of oxygen.
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
16
views
class9
ncert
atoms
and
molecules
1
answer
Which has more number of atoms, 100 grams of sodium or 100 grams of iron
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
2
views
class9
ncert
atoms
and
molecules
1
answer
If one mole of carbon atoms weighs 12grams, what is the mass (in grams) of 1 atom of carbon?
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
3
views
class9
ncert
atoms
and
molecules
1
answer
Calculate the formula unit masses of ZnO
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
4
views
class9
ncert
atoms
and
molecules
1
answer
Calculate the molecular masses of
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
15
views
class9
ncert
atoms
and
molecules
1
answer
How many atoms are present in a
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
3
views
class9
ncert
atoms
and
molecules
1
answer
What is meant by the term chemical formula?
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
3
views
class9
ncert
atoms
and
molecules
1
answer
Write down the names of compounds represented by the following formulae:
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
13
views
class9
ncert
atoms
and
molecules
1
answer
Write down the formulae of
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
14
views
class9
ncert
atoms
and
molecules
1
answer
Why is it not possible to see an atom with naked eyes?
asked
Aug 25, 2021
in
ATOMS AND MOLECULES
by
Pari
|
5
views
class9
ncert
atoms
and
molecules
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