A propane torch is lit inside a hot air balloon during preflight preparations to inflate the balloon.
Which condition of the gas remains constant?

How are the terms group and period used on the periodic table

What powdery mineral is a health hazard when airborne?

Asample of calcium chloride (cacla) contains 100.2 grams of calcium (ca) and 177.3 grams of chlorine (co. what is the percent composition of chlorine 2.510% 36.10% 56.50% 63.89%