The isotope cobalt-60 has a nuclear mass of 59.933820 u. Calculate the mass defect of cobalt-60 using the following information: Mass of Proton: 1.007825 u Mass of Neutron: 1.008665 u 1 u

The mass defect of cobalt-60 is 0.56307 u.

Explanation:

The isotope Cobalt-60 has a nuclear mass of 59.933820 u

Mass of a Proton: 1.007825 u

Mass of a Neutron: 1.008665 u

1 u = 931.5 MeV

We take the PARTICLE masses of  27  protons

, and  33  neutrons.

(Excluding mass of Electrons)

∴ 27 × 1.007825 u. + 33 × 1.008655 u. - 59.933820 u. = 0.56307 u.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).