When Magnesium Is Heated in Air, It Reacts with Oxygen

question 132

Multiple Choice

When magnesium is heated in air, it reacts with oxygen to form magnesium oxide: 2Mg(s) + O₂(g) → 2MgO(s) If the mass of the magnesium solid increases by 0.335 g, what mass of magnesium metal should have reacted?

• A)0.882 g
• B)0.441 g
• C)0.509 g
• D)1.02 g
• E)not enough information

---

Definitions:

Repayment Period

The time frame during which a borrower is required to pay back a loan or debt.

Patent

A form of protection for intellectual property provided to an inventor for a period of 17 years.

Brand Name

A distinctive title or symbol that identifies a product and differentiates it from competitors.

Trademark

A symbol, word, or phrase legally registered or established by use as representing a company or product, protecting the brand's identity.