A Solution of Sodium Carbonate, Na₂CO₃, Is Prepared by Dissolving

question 38

Multiple Choice

A solution of sodium carbonate, Na₂CO₃, is prepared by dissolving 25 grams of sodium carbonate in water to produce 450 mL of solution. What is the molar concentration? [MM = 105.9888 grams/mole]

• A) 0.0556 M
• B) 0.524 M
• C) 0.000524 M
• D) 5.56 M

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Definitions:

Chest Tube Removal

The process of safely taking out a tube that was inserted into the space around the lungs to remove air, blood, or fluids, often after surgery or injury.

Breath Sounds

The noises produced by the movement of air in the respiratory tract, which can be heard through a stethoscope and provide information about lung health.

Pleural Cavity

The thin fluid-filled space between the two layers of the pleura surrounding each lung, facilitating lung movement.

Posterior Chest Tube

A drainage tube placed in the back part of the chest cavity to remove air, fluid, or blood, promoting lung re-expansion.