A 427 Gram Sample of Potassium Nitrate Contains How Many Grams

question 46

Multiple Choice

A 42.7 gram sample of potassium nitrate contains how many grams of potassium?

• A)39.1
• B)16.5
• C)21.4
• D)8.54
• E)none of the above

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Definitions:

FMVSS-121

The Federal Motor Vehicle Safety Standard addressing air brake systems in heavy-duty vehicles to ensure safety through performance requirements.

Service Brake Circuit

The network of components, including lines, valves, and actuators, that allows a vehicle to decelerate or stop by hydraulic or mechanical means.

Charged with Air

Typically refers to pneumatic systems or equipment that has been pressurized with air for operation or use.

Trolley Valve

A valve used in air brake systems on trucks and trailers, allowing the driver to control the trailer brakes independently.