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Dec 17, 2014
Atomic masses of all the elements?
Sajjan singh Solanki
Nov 24, 2013
write the names and formula of any 20 compounds by combing acidic and basic radicals
Mragisha
Dec 19, 2014
The technique to learn atomic masses of elements according to the periodic table?
The atomic mass is double the atomic numb...
Mragisha
Feb 5, 2015
If one mole of carbon atom weighs 12g,what is the mass in grams of 1 atom of carbon ?
One of atom is 209
Mragisha
Dec 15, 2014
All the important formulaes relating with mole concept
The following formulas are used in the calculations :
Number of moles (n) = Given number of particles (N) / Avogadro number (N0
Charvi
Oct 16, 2013
What are the uses or applications or examples of ISOBARS ?
An isobar of Cobalt is used to treat cancer
Dhivyaa Muruganantham
Nov 23, 2014
how many oxygen atoms are present in 88 g of CO2 ?
Navdeep Dhingra
Feb 20, 2015
Calcium Carbonate (CaCO3) contains 40% calcium , 12% carbon and 48 % oxygen by mass . Knowing that the law of constant proportions holds good , calculate the mass of the constituent elements in 2g of calcium carbonate .
According to law of definite proportions, in a chemical substance, the elements a...
Syed ismial
Mar 16, 2014
nitrogen and hydrogen combine in the ratio 14 : 3 by mass to form ammonia molecule . find the formula by calculating the molar ratio (given mass N = 14u , H = 1 u)
Shivani
Jan 5, 2015
How to find number of valence electrons using ionization energy (of a hypothetical atom)?
eg.-IE1-52,IE2-114, IE3-540, IE4-735
eg.-IE1-52,IE2-114, IE3-540, IE4-735
Ans:
Mragisha
Dec 17, 2014
Atomic masses of all the elements?
Sajjan singh Solanki
Nov 24, 2013
write the names and formula of any 20 compounds by combing acidic and basic radicals
Mragisha
Dec 19, 2014
The technique to learn atomic masses of elements according to the periodic table?
The atomic mass is double the atomic numb...
Mragisha
Feb 5, 2015
If one mole of carbon atom weighs 12g,what is the mass in grams of 1 atom of carbon ?
One of atom is 209
Mragisha
Dec 15, 2014
All the important formulaes relating with mole concept
The following formulas are used in the calculations :
Number of moles (n) = Given number of particles (N) / Avogadro number (N0
Charvi
Oct 16, 2013
What are the uses or applications or examples of ISOBARS ?
An isobar of Cobalt is used to treat cancer
Dhivyaa Muruganantham
Nov 23, 2014
how many oxygen atoms are present in 88 g of CO2 ?
Navdeep Dhingra
Feb 20, 2015
Calcium Carbonate (CaCO3) contains 40% calcium , 12% carbon and 48 % oxygen by mass . Knowing that the law of constant proportions holds good , calculate the mass of the constituent elements in 2g of calcium carbonate .
According to law of definite proportions, in a chemical substance, the elements a...
Syed ismial
Mar 16, 2014
nitrogen and hydrogen combine in the ratio 14 : 3 by mass to form ammonia molecule . find the formula by calculating the molar ratio (given mass N = 14u , H = 1 u)
Shivani
Jan 5, 2015
How to find number of valence electrons using ionization energy (of a hypothetical atom)?
eg.-IE1-52,IE2-114, IE3-540, IE4-735
eg.-IE1-52,IE2-114, IE3-540, IE4-735
Ans: