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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



Thanks satyanarayna .......

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 (N
0

Charvi

Oct 16, 2013

#### What are the uses or applications or examples of ISOBARS ?



1. An isobar of Cobalt is used to treat cancer

Dhivyaa Muruganantham

Nov 23, 2014



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)



Substance makes cell wall in fungi

Shivani

Jan 5, 2015



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



Thanks satyanarayna .......

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 (N
0

Charvi

Oct 16, 2013

#### What are the uses or applications or examples of ISOBARS ?



1. An isobar of Cobalt is used to treat cancer

Dhivyaa Muruganantham

Nov 23, 2014



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)



Substance makes cell wall in fungi

Shivani

Jan 5, 2015



Ans:

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