Answer:
893 moles
Explanation:
An ideal gas at STP occupies 22.4 liters. Calculating Oxygen as if it were an ideal gas there are . 893 moles of Oxygen in 20.0 liters.
Answer:
<h2>0.73 g/cm³</h2>
Explanation:
The density of a substance can be found by using the formula
From the question we have
We have the final answer as
<h3>0.73 g/cm³</h3>
Hope this helps you
The unknown medium would be glass
-
Menirals have definite chemical composition
- Minerals have crystalline structure
<u>Explanation:</u>
Minerals should be found in nature. Elements made laboratories are not actual minerals like masquerading as rubies or sapphires. All naturally available crystals are not minerals like opal and amber.
Minerals are not under any class of organic compounds. Almost all known minerals come from inorganic processes. Some minerals originate from organic processes like pearls.
Minerals exist only as solids. Solids have a defined volume and shape, and they cannot be compressed any further. Minerals are rigid.
- Definite chemical composition
Each mineral has a unique combination of atoms that cannot be found in other minerals. The strength of mineral can be defined by the type of bond a mineral has. Some minerals, like gold and diamond, have only one element in it.
Minerals form crystals that have repeated arrangements of ions. Minerals have different shapes depending on the size of the ion. Crystals usually take six types of shapes.
The answer is; water
Water from precipitation is the main agent of erosion. The water forms surface runoffs on the earth surface carrying with it soil to the oceans. This water also curves the earth surface by eroding and curving rocks over time to form rivers. It is this water that also dissolved limestone rocks to form geographical features such as caves. Another example is how water from the oceans erodes beaches to form features such as cliffs.
