What Is the Volume of Hydrogen Gas at STP Released

question 11

Multiple Choice

What is the volume of hydrogen gas at STP released from 2.70 g of aluminum metal and hydrochloric acid? __Al(s) + __HCl(aq) → __AlCl3(aq) + __H₂(g)

• A)1.12 L
• B)1.49 L
• C)2.24 L
• D)3.36 L
• E)6.72 L

---

Definitions:

Rear Wheel Lock-up

A condition in braking where the rear wheels of a vehicle stop rotating and skid, often due to excessive brake force or poor road conditions.

Master Cylinder Bore

The internal diameter of the master cylinder in a vehicle's brake system, which affects the hydraulic pressure and, ultimately, the braking force.

Crocus Cloth

A very fine, abrasive cloth used for polishing metal surfaces, often utilized in metalworking and finishing applications.

Emery Paper

A type of abrasive paper used for smoothing or polishing metal surfaces.