The characteristics are
Hypothesis and observation
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Answer:Empty gas cylinders are dangerous because the can explode and cause hazards and empty gas cylinders with open valves can breath,this can cause explosion.
Explanation:
Answer:
101 kPa
Explanation:
Dalton's law of partial pressures states that in a gaseous mixture, the partial pressure of a gaseous component is the same as the pressure that gas would exert if it alone occupied the container.
Answer:
Explanation:
Speed is a physical quantity that describes the rate of change of distance with time.
Distance is the length of the path covered by a body.
Time is the duration of the motion of the body
- Speed is a scalar quantity that is only concerned with the magnitude of the motion of a body.
- The direction of motion is not of importance when considering.
- There are several units of speed depending on the context where it is being used or applied.
Speed = 
Answer:
The science or act of measuring changes in state variables of a body for the purpose of deriving the heat transfer associated with changes of its state due, for example, to chemical reactions, physical changes, or phase transitions under specified constraints.
Explanation:
