Ratio of number of protons to neutrons present in `27.83 xx 10^(29)` molecules of `ND_(4)^(+)`
(where D is `._(1)H^(2)`)

Find the number of neutrons present in 5xx10^(-4) mol of ""^(14)C isotope.

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

The total number of neutrons present in 10g D_(2)O (D "is" _(1).^(2)H) are .

The total number of neutrons present in 10g D_(2)O (D "is" _(1).^(2)H) are .

The total number of neutrons present in 10g D_(2)O (D "is" 2 H are .

If the total number of neutrons present in D_(2)O^(18) molecules is x then the value of (x)/(2) is "__" .

Give the number of Protons, Electrons and Neutrons present in the atom having atomic number 27 and mass number 56.

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

2.7 gm of Al is heated with 100 mL of H_(2)SO_(4) (29.4% w/w density 1 gm/mL) following reaction takes place: Al+H_(2)SO_(4) rarr Al_(2)(SO_(4))_(3)+H_(2) The hydrogen gas obtained in the reaction is mixed with 1.2 xx 10^(24) molecules of O_(2) . The molecular weight of gaseous mixture is :(Assuming gases are not reacting N_(0)=6 xx 10^(23))