B. Because of the presence of hydrogen sulphide in Brass, it combines with oxygen in air and form water, evaporates. So remained sulphide is colourless in air .So Brass gets discoloured in the air.
Answer:
they both are solid at room temperture
Explanation:
Measure the amount of chemical used, measure the mass before and after
The cerebrum is the largest brain<span> structure in humans and </span>accounts<span> for about two-thirds of the </span><span>brain’s mass</span>
