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Pavel [41]
4 years ago
15

1)How can scientists use a seismograph to determine the density and depth of Earth's layers?

Chemistry
1 answer:
Masteriza [31]4 years ago
3 0
Hello Olivia!!! 

<span>Q.) Describe at least two geological events that can occur at a divergent boundary.
</span>
A.)Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges. Divergent boundaries also form volcanic islands which occur when the plates move apart to produce gaps which molten lava rises to fill.

Hope this can help!!! 
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A calculation based upon _______is only as accurate as the device used for measurement.​
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Hmmmm i understand but i wanna know what to measure or whats about?
7 0
3 years ago
Which of the following substances could the unknown be: KOH, NH3, HNO3, KClO2, H3PO3, CH3COCH3 (acetone)?
valkas [14]

Answer:

CH3COCH3

Explanation:

Acetone is an organic compound belonging to the organic ketone function.

To recognize which function a compound belongs to, we must analyze its functional group. For example, hydroxyl (OH) is characteristic of alcohols. For ketones, the functional group is carbonyl, which is represented below.

Analyzing the options, we can notice that NH3, HNO3, KClO2 and H3PO3 are inorganic compunds, because they don't have carbon in their structures. KOH has the hydroxyl, so it's a alchol, and CH3COCH3 may be writing as a ketone.

6 0
3 years ago
Logan combines hydrogen chloride (hcl) and calcium hydroxide ca(oh)2. as a result, a reaction occurs and new substances are form
scoundrel [369]
B. Calcium chloride and water.
8 0
4 years ago
Read 2 more answers
Organelles → tissues → organs → organ systems → organism
Viefleur [7K]
A is the correct answer cells between organelles and tissues
3 0
4 years ago
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20 points will favor answer Please guys i could really use some help on this question
posledela
Answer : Option B) <span>The oxygen in the air forms ozone in presence of UV rays

Explanation :
The other given options for the chemical change seems to be irrelevant as the option A which converts  water into different forms can be called as physical change, option C only dust and soot particle are released in air where no new substance is formed And in option D sulfur dioxide is getting released into air which is also a form of a physical process.

So in option B we can see a new compound getting formed which is ozone in presence of UV rays hence it is a chemical change.</span>
8 0
3 years ago
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