Which of the following is a characteristic property of matter that could be used to identify an unknown substance? • mass
• density
•volume
•temperature

physical properties

Explanation:

the characteristics (properties) that can be observed without changing the identity of a substance

Examples of physical properties

mass, color, size, volume, texture, density, state of matter, boiling point, melting point

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.