I. Define work and write its unit. A car of mass 1200 kg iravelling ai a speed of 45 km/h is broughi io resi by applying brakes. How much work is done by ihe brakes?With the help of the following make formulas of three compounds:
(3)
(a) SO42
(b) CH3COO
(c) PO43
(i) A13+
(ii) Ca2+
(iii) Na+
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Answer:
b..............mmmm........mm..m.m
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