The best and most correct answer among the choices provided by the question is the second choice. The activities in the ring of fire are mainly caused by t<span>he movement of mantle rock through the cracks between tectonic plates.</span> I hope my answer has come to your help. God bless and have a nice day ahead!
Answer: The correct answer is Option B.
Explanation:
To calculate the number of moles, we use the formula:
Molar mass of iron = 55.8 g/mol
Given mass of iron = 558.8
Putting values in above equation, we get:
For the given chemical equation:
By Stoichiometry,
4 moles of Iron produces 2 moles of Iron(III) oxide
So, 1 mole of Ion will produce = 
= 0.5 mole of Iron (III) oxide.
Hence, the correct answer is Option B.
Each kind of scientist is matched with an aspect of the hot spring he or she is most likely to study as follows:
- <u>Geologist:</u> rocks around and under the hot spring.
- <u>Ecologist:</u> relationships between organisms and the hot spring.
- <u>Sociologist:</u> human behavior around the hot spring.
- <u>Meteorologist:</u> atmosphere and weather around the hot spring.
<h3>What is a scientific observation?</h3>
A scientific observation can be defined as an active acquisition of knowledge (information) through one of the sense organs, while using scientific tools and instruments.
<h3>The types of
scientific observation.</h3>
In Science, there are two main types of scientific observation and these include the following:
<h3>What is a
hot spring?</h3>
A hot spring can be defined as a natural or an artificially-induced phenomena in which very hot groundwater flows out from the Earth's crust due to the heat present in the geosphere.
In this exercise, you're required to match each kind of scientist with an aspect of the hot spring he or she is most likely to study as follows:
- <u>Geologist:</u> rocks around and under the hot spring.
- <u>Ecologist:</u> relationships between organisms and the hot spring.
- <u>Sociologist:</u> human behavior around the hot spring.
- <u>Meteorologist:</u> atmosphere and weather around the hot spring.
Read more on hot springs here: brainly.com/question/4421633
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Complete Question:
Match each kind of scientist with an aspect of the hot spring she or he might study.
A. Geologist
B. Ecologist
C. Sociologist
D. Meteorologist
1. Relationships between organisms and the hot spring.
2. Human behavior around the hot spring.
3. Rocks around and under the hot spring.
4. Atmosphere and weather around the hot spring.
Answer:
.
Explanation:
Magnesium chloride and silver nitrate reacts at a 
ratio:
.
In reality, the nitrate ion from silver nitrate did not take part in this reaction at all. Consider the ionic equation for this very reaction:
.
The precipitate silver chloride 
is insoluble in water and barely ionizes. Hence, 
isn't rewritten as ions.
Net ionic equation:
.
Calculate the initial quantity of nitrate ions in the mixture.
.
Since nitrate ions 
do not take part in any reaction in this mixture, the quantity of this ion would stay the same.
.
However, the volume of the new solution is twice that of the original nitrate solution. Hence, the concentration of nitrate ions in the new solution would be 
of the concentration in the original solution.
.
Answer:
8 moles
Explanation:
When we are asked to convert from grams of a substance into moles, we have to use the substance's molar mass.
Meaning that for this problem, we'll <em>use the molar mass of hydrogen peroxide</em> (H₂O₂), as follows:
There are 8 moles in 272 grams of hydrogen peroxide.
