Christy is a forensic scientist. she is given a white powder and asked to determine whether it's sugar. she analyzes the white
powder with a mass spectrometer in her lab. the test results reveal that the substance has a different molecular mass than
sugar. what do these test results say about the initial hypothesis and what would be a reasonable next step for christy's
investigation?
select the correct answer from each drop-down menu.

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