Explanation:
Chemical formula of gypsum is and it is a soft sulfate mineral that consists of calcium sulfate dihydrate.
Some uses of gypsum are as follows.
- It is used for manufacturing wall board.
- It is used in the manufacture of plaster of paris.
- It is also used as a fertilizer.
Thus, we can conclude that out of the given options, fertilizer, wallboard, and plaster of paris are some uses of the mineral gypsum.
Carbon monoxide (CO) is an odorless, poisonous gas. It is evolved from combustion engines. In boats, carbon monoxide is released near the engines when fuels like gasoline are combusted. CO is also released in the exhaust of the generators used on board. High concentrations of CO are situated at the exhaust outlets in the boats. Carbon monoxide poisoning in boats can be prevented by having proper ventilation system in the boat.
Answer:
Explanation:
We can write the amount of mass of radon-222 left after a time t by using the equation:
where
is the initial mass
t is the time
is the half-life
Substituting t = 15.2 d in the formula, we find