The reason why iron oxide has more mass than the iron is because Iron oxide has oxygen atoms, and pure iron does not.
When iron rusts and forms iron oxide, the iron oxide has more mass than the iron. Which statement correctly explains this
observation?
(A)Iron oxide has oxygen atoms, and pure iron does not.
(B)The oxygen atoms in iron oxide have more mass than the iron atoms in pure iron.
(C)The iron atoms in iron oxide have more mass than pure iron.
(D)There are more iron atoms in iron oxide than in pure iron.
When a chemical reaction takes place, other atoms are combined with pure elements to form compounds. This addition of another atom (oxygen) after reaction makes iron oxide formed heavier than pure iron.
Iron oxide is a chemical substance formed when pure iron rusts. The formation of iron oxide is a chemical reaction.
Hence, the correct answer to the question is; the iron is heavier because Iron oxide has oxygen atoms, and pure iron does not.
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Answer:
The SAT is a standardized test widely used for college admissions in the United States
Explanation:
The difference between comparative advantage and absolute advantage is that: A. Comparative advantage measures opportunity cost and absolute advantage measures efficiency.
<h3>What is a comparative advantage?</h3>
A comparative advantage can be defined as the ability of a business firm or country to produce goods and services at a lower opportunity cost than their rivals (competitors) or trade partners.
<h3>What is an opportunity cost?</h3>
An opportunity cost is also referred to as alternative forgone and it can be defined as the value, profit or benefits that are given up and forfeited by an individual or business firm, in order to choose or acquire something that is deemed most significant at a particular point in time.
In this context, we can infer and logically deduce that the difference between comparative advantage and absolute advantage is that comparative advantage measures opportunity cost and absolute advantage measures efficiency.
Read more on comparative advantage here: brainly.com/question/12291750
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