A Reaction Vessel Contains Equal Masses of Solid Magnesium Metal

question 83

Multiple Choice

A reaction vessel contains equal masses of solid magnesium metal and oxygen gas. The mixture is ignited and burns with a burst of light and heat, producing solid MgO. The mass of the MgO is less than the initial mass of the magnesium and oxygen. What is your explanation for this apparent loss of mass?

• A)Conservation of mass is violated in this reaction.
• B)Some of the mass was converted into energy (heat and light) as
• C)Not all of the oxygen reacted.
• D)Not all of the magnesium reacted.
• E)Measurement must be in error because mass is conserved in chemical reactions.

---

Definitions:

Global Marketing Locations

Geographical areas around the world where companies promote and sell their products or services.

Currency Exchange Rate

The rate at which one currency can be exchanged for another, often determined by national economies and global market conditions.

Japanese Yen

The official currency of Japan, which plays a significant role in international finance and trade.

Political Stability

A condition where a government is stable, capable of maintaining order, and there is an absence of political turmoil or frequent government change.