The pH scale is used to measure how acidic or alkaline something is.
Hope that helped you!
BRAINLIEST??
The first one because some people might not believe that and others might believe that.
Answer:
the mass of the air in the room is 4.96512 kg ( in 0°C)
Answer:
Extractive metallurgy
Explanation:
Extractive metallurgy is the practice of removing valuable metals from an ore and refining the extracted raw metals into a purer form.