A 15 Meter by 12 Meter Pool of Water Has

question 50

Multiple Choice

A 15 meter by 12 meter pool of water has a depth of 2.2 meters.What mass of silver ion is present in the reservoir if the concentration of silver ion is 0.14 ppm? (1 m³ = 1000 L; assume the density of the solution is 1.00 g/mL)

• A) 5.5 × 10^-4 g
• B) 5.5 × 10^-2 g
• C) 0.55 g
• D) 5.5 g
• E) 55 g

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Definitions:

IgM

Immunoglobulin M, a class of antibodies that is the first to be made by the body to fight a new infection.

Tolerance

Failure of the specific immune system to respond to an antigen.

Costimulation

An essential process in the immune response, involving a secondary signal to T cells from antigen-presenting cells, ensuring a proper and controlled immune activation.

Interleukin 2

A type of cytokine produced by T-cells that plays a critical role in the regulation of immune responses, including the activation and proliferation of lymphocytes.