Answer:
There are three significant figures in the number 20300
Explanation:
The term suspension means mixing of small and light particles together which are not dissolved in a fluid.
Therefore, clay, slit, and sand would be carried by suspension as they have small particles as compared to small pebbles and large rocks.
In a rock, there might be substance which are soluble in water. These soluble substances are therefore, continuously removed from the rock by the action of water.
Hence, holes will appear in the rock leading to rills and rough surface. Ultimately, the rock will either decompose or fall into pieces. On acidification of water by organic and inorganic solvents, the dissolution of rock increases.
Thus, it is concluded that in solution, rocks are dissolved by salts and acids.
Every 4 days, the amount of radon you started with is reduced by half.
Start with 4 grams of radon on day 1
After 4 days, you have (1/2)* 4 grams of radon = 2 grams
Start with 2 grams of radon on day 5
After four more days (end of day 8) you have:
(1/2)*2 grams = ?
