Please somone help me with a chemistry question brainliest to whoever answers correctly and 20 points

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative