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 black and yellow with high handle - positive ; white and blue - positive ; red and black - negative
Explanation:
Comparative advantage is the profit when the goods are produced at less cost. To increase comparative advantage the opportunity cost must be reduced.
<h3>What are opportunity cost and comparative advantage?</h3>
Opportunity cost is the loss of the potential value and the benefit when an alternative resulting in the harm is chosen over another activity that should have profited.
The comparative advantage is the capacity that the goods can be produced at less cost than the other activities so that it becomes profitable.
Therefore, by lowering the opportunity cost the comparative advantage can be increased.
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$96.80 because $83.60 + 15.35 = 98.95
98.95 - 2.25 = $96.80