How many molecules are there in 14g of nitrogen gas at s.t.p? (n = 14, Avogadro Number = 6. 0 x 1023 mol-1)

Aluminum is above iron in the electrochemical series, yet iron corrodes easily on exposure to air while aluminium does not. This is because aluminium

A sample of orange juice is suspected to have been contaminated with a yellow dye. Which of the following methods can be used to detect the dye?

Which of the following compounds will undergo additional reactions?

The electronic configuration 1s2 22s 22p 63s23p 6 is that of a

Which of the following reaction will not take place under normal conditions?

When a solid melts and consequently boils, there is

The heat accompanying the reaction represented by the equation H2O (l) → H 2O(g) is described as the heat of

Catalytic hydrogenation of oils results in the production of