Solve the Problem. -How Much Pure Acid Should Be Mixed with 9 Gallons

question 62

Multiple Choice

Solve the problem.
-How much pure acid should be mixed with 9 gallons of a 50% acid solution in order to get an 80% acid solution?

• A)4.5 gal
• B)22.5 gal
• C)36 gal
• D)13.5 gal

---

Definitions:

Photoperiodic Response

The biological reaction of organisms to the length of day or night, affecting behaviors such as flowering in plants and mating in animals.

Vernalization

Stimulation of flowering in spring by long exposure to low temperature in winter.

Statoliths

Small granules, often made of calcium carbonate, found within certain cells associated with the detection of gravitational orientation in plants and some invertebrate animals.

Gravity-sensing Cells

Specialized cells in organisms that detect and respond to gravity, guiding growth and movement direction.