Vitamin C is known to contain `1.29xx10^24` hydrogen atoms. Calculate the number of moles of hydrogen atoms.

Calculate the number of atoms in 0.25 mole atoms of carbon.

Write any postulate of the Bhor's model of the hydrogen atom

Write any postulate of the Bohr's model of the hydrogen atom

One mole of an element contains 6.022xx10^23 atoms. find the number of oxygen atoms in 4 g of O_2 .

GAM of Hydrogen is 1g: Find the mass of 1 atom of hydrogen.

One gram atom of an element contains 6.023xx10^23 atoms. Find the number of atoms in 8 g oxygen.

Calculate the following in three moles of ethane (C_2H_6) Number of moles of hydrogen atoms

Some hints are given below about an organic compound: It contains 4 carbons, It contains 1 oxygen atom and 10 hydrogen atoms: Write the structural formulas of the possible compounds using the above hints.

One mole of an element contains 6.022xx10^23 atoms. Which is heavier, one oxygen atom or 10 hydrogen atoms?