Consult to find (a) two metals less dense than water, (b) two metals more dense than mercury,(c) the densest known solid metallic element, and (d) the densest known solid nonmetallic element.

(a) lithium and potassium

(b) gold and osmium

(c) Osmium

(d) Iodine

Explanation:

(a) Metals generally have high density and high tensile strength. But the metals which have density even less than water are lithium and potassium.

The density of water = 1 g/cm³

Density of lithium = 0.53 g/cm³

Density of potassium = 0.59 g/cm³

(b) The two metals which are more denser than mercury are gold and osmium.

The density of mercury = 13.53 g/cm³

Density of gold = 19.3 g/cm³

Density of osmium = 22.59 g/cm³

(c) The value of density of osmium corresponds the maximum value of the density in the metals. Hence, osmium is the densest known solid metallic element.

(d) The value of density of iodine (4.94 g/cm³) corresponds the maximum value of the density in the non metals. Hence, iodine is the densest known solid non metallic element.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

am i too late?

explanation: