Which of the Following Statement(s) Is (Are) True About

question 8

Multiple Choice

Which of the following statement(s) is (are) true about a compound that has a molecular ion peak in its mass spectrum at mass 69 and shows a prominent peak in its IR spectrum at 2250 cm^-1?

• A)The compound has a molecular mass of 70.
• B)The compound contains a C=O group.
• C)The compound contains a cyano or alkyne group.
• D)Both (The compound has a molecular mass of 70) and (The compound contains a C=O group) are true statements.
• E)Both (The compound has a molecular mass of 70) and (The compound contains a cyano or alkyne group) are true statements.

---

Definitions:

Weekly Salary

The total amount of compensation or earnings an individual receives on a weekly basis.

Years of Experience

The length of time someone has spent in their profession or a particular field of work.

Teacher

A person who instructs students in a variety of subjects or skills, often in a school setting.

Explanatory

Pertaining to a variable or factor that is proposed to predict or account for changes in a response variable in the context of statistical analysis or scientific research.