When 261 G of Solid Na₂CO₃ Is Dissolved in Sufficient Water

question 88

Multiple Choice

When 2.61 g of solid Na₂CO₃ is dissolved in sufficient water to make 250. mL of solution, the concentration of Na₂CO₃ is:

• A)0.0246 M
• B)10.4 M
• C)0.205 M
• D)0.0985 M
• E)0.141 M

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Definitions:

Cellular Immunity

One of the three general categories of immune response, based on the action of a class of blood cells called T-lymphocytes. The “T” designation refers to the locus of their production, the thymus gland. Cellular immunity results from a cascade of actions of various types of T-lymphocytes.

Monocytes

A type of white blood cell that plays a critical role in the immune system by killing pathogens, removing dead cells, and stimulating the action of other immune cells.

Sympathetic System

A part of the autonomic nervous system that activates what is often termed the fight or flight response, preparing the body for action.