|
An element has 6 electrons in its M-shell
|
|
1
|
5816
|
November 26, 2016
|
|
How many neutrons are present in B and D?
|
|
1
|
944
|
November 26, 2016
|
|
An atom contains 3 protons, 3 electrons and 4 neutrons
|
|
1
|
8232
|
November 26, 2016
|
|
Tabulate the two sub-atomic particles present in the nucleus of each of them
|
|
1
|
638
|
November 26, 2016
|
|
Number of protons, neutrons and electrons
|
|
1
|
2976
|
November 26, 2016
|
|
Atomic number of aluminium is 13 and mass number is 27
|
|
1
|
5530
|
November 26, 2016
|
|
What are the mass numbers of A and B?
|
|
1
|
1136
|
November 26, 2016
|
|
The atom of an element has 9 protons, 9 electrons and 10 neutrons
|
|
1
|
4907
|
November 26, 2016
|
|
Determine the valency of oxygen and sulphur
|
|
0
|
1953
|
November 26, 2016
|
|
What is the atomic number of the element?Identify the element
|
|
1
|
494
|
November 26, 2016
|
|
For the following statements, write T for True and F for False
|
|
1
|
3156
|
November 26, 2016
|
|
How many gram of neutron is present in 10 g sample of heavy water?
|
|
0
|
3910
|
November 25, 2016
|
|
Explain why the number of atoms in one mole of hydrogen gas
|
|
1
|
3441
|
November 25, 2016
|
|
Calculate the number of moles in 112 g of iron
|
|
1
|
5244
|
November 25, 2016
|
|
What mass of silver nitrate will react
|
|
1
|
2793
|
November 25, 2016
|
|
How do we express number of particles in - terms of moles?
|
|
1
|
5551
|
November 25, 2016
|
|
Calculate the molecular mass for each one of them
|
|
1
|
6519
|
November 25, 2016
|
|
Which would weigh more
|
|
1
|
757
|
November 25, 2016
|
|
Find the mass of each one of the following
|
|
1
|
1120
|
November 25, 2016
|
|
What is the mass of 0.5 mole of NH3?
|
|
1
|
11214
|
November 25, 2016
|
|
Calculate the number of molecules of carbon dioxide are not equal in number of moles
|
|
1
|
2214
|
November 25, 2016
|
|
Calculate the percentage composition of the compound
|
|
1
|
843
|
November 25, 2016
|
|
Calculate the following quantities in 5.6 g of nitrogen
|
|
1
|
7816
|
November 25, 2016
|
|
Calculate the number of moles present in:
|
|
1
|
3458
|
November 25, 2016
|
|
Find out the percentage composition of each element
|
|
1
|
1907
|
November 25, 2016
|
|
Define Avogadro's number. Write its value
|
|
1
|
3382
|
November 25, 2016
|
|
Define formula unit mass of a substance
|
|
1
|
2914
|
November 25, 2016
|
|
Find the formula of ammonia molecule
|
|
1
|
1629
|
November 25, 2016
|
|
Calcium carbonate decomposes on heating to form calcium oxide and carbon dioxide
|
|
1
|
8648
|
November 25, 2016
|
|
Define formula unit mass
|
|
1
|
14535
|
November 25, 2016
|