Atoms and Molec...

In a chemical reaction, when 14 g of sodium carbonate reacted with 10g of acetic acid (ethanoic acid), then it was observed that, 16.67 g of sodium acetate solution in water and 7.33 g of carbon dioxide were produced. Which law does this depicts?

Smallest particle of an element or a compound which is capable of independent existence is called:

720 g of water contains ______ moles of water.

Any sample of pure water, irrespective of its source, contains 88.89% oxygen and 11.11 % hydrogen by mass. The data supports the:

Which law stated that 'matter is neither created nor destroyed'?

Which of these is not a molecule?

Since Avogadro number is $$6.023\times {10}^{23}$$ and atomic mass of nitrogen is $$14$$ amu, one mole of $$N_2$$ gas will have:

The mass of $$Na$$ present in 11.7 g of $$NaCl$$ is:

Smallest possible unit of a compound which has independent existence is :

Which of the following elements has the same molecular mass as its atomic mass?