A Student in a Chemistry Laboratory Has Access to Two $10 \%$

question 22

Multiple Choice

A student in a chemistry laboratory has access to two acid solutions. The first solution is $10 \%$ acid and the second is $35 \%$ acid. (The percentages are by volume.) How many cubic centimeters of each should she mix together to obtain $150 \mathrm {~cm} ^ { 3 }$ of a $25 \%$ acid solution?

• A) \(60 \mathrm { cc } \text { of } 10 \% \text { solution and } 102 \mathrm { cc } \text { of } 35 \% \text { solution }\)
• B) \(50 \mathrm { cc } \text { of } 10 \% \text { solution and } 90 \mathrm { cc } \text { of } 35 \% \text { solution }\)
• C) \(90 \mathrm { cc } \text { of } 10 \% \text { solution and } 60 \mathrm { cc } \text { of } 35 \% \text { solution }\)
• D) \(60 \mathrm { cc } \text { of } 10 \% \text { solution and } 90 \mathrm { cc } \text { of } 35 \% \text { solution }\)
• E) \(60 \mathrm { cc } \text { of } 10 \% \text { solution and } 100 \mathrm { cc } \text { of } 35 \% \text { solution }\)

---

Definitions:

Attached Caretakers

Individuals who have formed a close and secure relationship with those they care for, fostering emotional and social development.

Visually Focused

Refers to an approach or condition where visual elements are prioritized or given primary attention.

Pouting Infants

Young children exhibiting a displeased or sullen expression, often as a response to dissatisfaction or a method to gain attention.

Ontogenetic Adaptation

A trait or behavior that has evolved because it contributes to survival and normal development; in one view, infant emotions are ontogenetic adaptations.