Why the mass of a rusted nail is greater than the mass of a nail before it rusted? Explain

Just show me the answer

26.8 moles of argon contain how many atoms?

Which statement is true about a reversible reaction? The forward and reverse reactions stop. The product is a salt and the reactant is an acid. The products react to re-form the original reactants.

A disaccharide is formed by the chemical bonding of A) two monosaccharides B) two polysaccharides C) one monosaccharide and one polysaccharide D) All the above

What human activity contributes to air pollution?

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?

What ecosystem is being described in the passage?

In the enzyme reaction above, catechol is the substrate, oxygen is a reactant, catechol oxidase is the enzyme, benzoquinone is the product, and water (H2O) is a by-product. Which of the following will decrease the rate of this reaction? a.

How do acids and bases affect the quality of freshwater sources?