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Iteru [2.4K]
3 years ago
14

How many formula units are in 9.3 g of alumina (Al2O3)?

Chemistry
1 answer:
Arada [10]3 years ago
8 0
We need more information
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Analyze: What do the elements in each column of the periodic table have in common?
ludmilkaskok [199]

Answer:

Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements.

Explanation:

Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements.

7 0
3 years ago
Sort the phrases pertaining to pure substances and mixtures as either true or false.
Lynna [10]
You have to note that pure substances can be elements or compounds. There is only one component all throughout. On the other hand, a mixture is a combination of different elements and compounds. They can appear in different phases. For example, air is a mixture. It is composed of pure substances of oxygen, carbon dioxide, and nitrogen.
5 0
3 years ago
1.
aleksklad [387]
1.c.) vegetarian and sediment build up in the bottom hope that work's✌


3.<span>D. Since in an uplift the water descending will go even faster making it crush on the rocks with more force and more friction increasing the rate of erosion.... Helped ? :) </span>

<span>And it's true since more water makes it faster and increase in land covering

thus taking more to the sea bed :x erosion


5.</span><span>Winter – Due to an increase in snowfall
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8.</span><span>A perched water table is normally insufficient for the purpose of supplying domestic groundwater requirements and generally runs dry after it has been drilled. If a perched water table intersects a surface that has a slope, it can be manifested by seeps or springs along this line of intersection. The slope of a water table is in general proportional to the slope of the overlying land surface.



</span>13.<span>The oil could leak into your neighbors’ yards and kill the grass roots.
</span><span>






14.
</span><span>Energy needed
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phew im done :)

5 0
3 years ago
Read 2 more answers
Materials move across a cell membrane in a process called _______.
maxonik [38]

Answer:

Diffusion

Explanation:

5 0
2 years ago
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Question 38 (1 point)
Fiesta28 [93]

Answer: Protons because they have a positive charge.

Explanation:

8 0
3 years ago
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