Answer:
According to the U.S. Department of Education, most American colleges and universities award college credit by the semester hour. In order to receive an associate degree, you must earn at least 60 credits, which typically can be fulfilled by completing 20 three-credit courses.
answer:
sedimentary rock is formed when rocks start to weather away causing them to loosen. **weathering is the breaking down of rocks, soils, minerals, and artificial materials through contact with water, atmospheric gases, and biological organisms.** sedimentary rocks are formed from older rocks. the pieces of broken rocks are then transported (through water.) and over time the layers will become compacted (salt crystals 'glue' the layers together.)
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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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