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Asked by Mragisha

Dec 17, 2014

Atomic masses of all the elements?

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Answer (1)

Asked by Sajjan singh Solanki

Nov 24, 2013

write the names and formula of any 20 compounds by combing acidic and basic radicals

Thanks satyanarayna .......

Answer (4)

Asked by Mragisha

Dec 19, 2014

The technique to learn atomic masses of elements according to the periodic table?

Answer.

The atomic mass is double the atomic numb...

Answer (4)

Asked by 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

Answer (2)

Asked by Mragisha

Feb 5, 2015

If one mole of carbon atom weighs 12g,what is the mass in grams of 1 atom of carbon ?

Ans: 1 m...

Answer (2)

Asked by Dhivyaa Muruganantham

Nov 23, 2014

how many oxygen atoms are present in 88 g of CO2 ?

Answer (1)

Asked by Charvi

Oct 16, 2013

What are the uses or applications or examples of ISOBARS ?

Isobars of uranium were used in nuclear reactor.
Isobars of cobalt were used in treatment of cancer.
Isobar of iodine was used in treatment of goitre.

Answer (8)

Asked by 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...

Answer (1)

Asked by Kanishka Tayal

Nov 16, 2013

What is difference between 2N and N2

2N represents two atoms of nitrogen whereas N2 represents one molecule of nitrogen gas.

Answer (2)

Asked by 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

Answer (2)

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