Explain if the combination of iron and copper sulfate is an example of a chemical reaction. Use evidence and scientific reasoning to support your answer.

How many atoms of oxygen are contained in 160 grams of n2o3

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution