A Concentrated Hydrofluoric Acid Solution Is 49

question 20

Multiple Choice

A concentrated hydrofluoric acid solution is 49.0% HF by mass and has a density of 1.3406 g/mL at 25°C.What is the mass of HF per L of solution?

• A)637 g HF /L soln
• B)0.0013 g HF /L soln
• C)376 g HF /L soln
• D)0.265 g HF /L soln
• E)3.76 g HF /L soln

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Definitions:

Leukocyte

Leukocytes, also known as white blood cells, are cells of the immune system involved in protecting the body against both infectious disease and foreign invaders.

Erythrocyte

A red blood cell, which is responsible for carrying oxygen from the lungs to the body's tissues and carbon dioxide as a waste product back to the lungs.

Parietal Layer

The outer layer of the membranes surrounding organs within body cavities, particularly in the pleura, pericardium, and peritoneum.

Glomerulus

A cluster of tiny blood vessels in the kidneys where blood filtration begins.