Calculate number of neutrons present in 12 xx 10^25` atoms of oxygen `(8O^17)`: (Given : N_A=6 xx 10^23`)

Calculate number of neutrons present in 12 X 10^25 atoms of oxygen (8O^17) : (Given : N_A = 6 X 10^23 )

Calculate the number of moles in : 12.044 xx10^23

Calculate the number of moles in 12.044 xx 10^(23) atoms of phosphorus.

Calculate the number of moles in 3.0115 xx 10^(23) atoms of calcium.

Calculate the number of moles iin 12.044 xx 10^(25) atoms of phosphorus.

Calculate the number of moles in 12.044 xx 10^(23) helium atoms.

No of gram atoms in 12.044 xx 10^(23) Na atoms

Calculate the mass of 12.044 xx 10^(25) molecules of oxygen (O_(2)) .

Total number of protons, neutrons and electrons present in 14 mg of ._(6)C^(14) is : (Take N_(A) = 6 xx 10^(23))

If mass of one atom is 3.32 xx 10^(-23)g, then calculate number of nucleons (neutrons and protons) present in 2 atoms of the element: (a) 40 (b) 20 (c) 10 (d) 40 NA