Below Is a Diagram Representing a Solvent A(l)in a 1-L

question 59

Multiple Choice

Below is a diagram representing a solvent A(l) in a 1-L beaker,and a solute X dissolved in the solvent.Solvent A has a density of 0.8 g/mL,and a molar mass of 40 g/mol. Solute X has a molar mass of 30 g/mol.Each circle of X represents 1 mol of X.Assume that the solute addition does not significantly change the volume of liquid in the beaker. What is the mass percent of solute X in this solution?

• A)0.4%
• B)3%
• C)12%
• D)13%
• E)20%

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Definitions:

Abstract Class

A class that cannot be instantiated on its own and is designed to be subclassed, often containing abstract methods that must be implemented by subclass.

Class Modifier

A keyword in object-oriented programming languages that defines the scope or behavior of a class, such as public, final, or abstract.

Object Oriented Programming

A programming paradigm based on the concept of "objects", which can contain data, in the form of fields, and code, in the form of procedures.

Encapsulation

A fundamental principle of object-oriented programming that restricts direct access to an object's components and can prevent the accidental modification of data.