Does warm air have high pressure or low pressure? How do you know?

Since warm air is less dense and creates less air pressure, it will rise; cold air is denser and creates greater air pressure, and so it will sink. When warm air rises, cooler air will often move in to replace it, so wind often moves from areas where it's colder to areas where it's warmer.

the ratio of the conjugate base to the acid required to attain the desired ph.

16

explanation:

the marks go by 4s