Question

Calculate the formula unit masses of zno, o, c, given atomic masses of zn = 65u, na = 23u, k = 39 u, c =3 12 u, and o = 16 u.

Answer 1

To maintain street lights, construction & repair work of village roads
• To maintain village markets, fairs and functions, collection of taxes if any, festivals and celebrations arrangements.
• To maintain record of births, deaths and also the marriages in the village and update the administration accordingly.
• To look after public health and hygiene providing facilities for sanitation as well as drinking water
• To provide free education to the poorer sections of the Society.
• To arrange for the higher education and job oriented programs for the youngsters.
• To organise gram sabha meetings and meetings of gram panchayat
• To provide health services as well as the health related facilities on the door step.
• To implement agriculture and animal husbandry related development schemes.

Answer 2

Answer :-

The formula unit mass of

(i) ZnO = 65 u + 16 u = 81 u

(ii) Na2O = (23 u x 2) + 16 u = 46 u + 16 u = 62 u

(iii) K2C03 = (39 u x 2) + 12 u + 16 u x 3

= 78 u + 12 u + 48 u = 138 u