Chemistry, 20.05.2020 04:00 tanyalaurenti
Which of the following can’t be separated into simpler substances or converted into another substance by chemical processes? A. element B. compound C. solution D. suspension E. colloid
Answers: 2
Chemistry, 23.06.2019 01:20, hflores0001
How can parts of a solution be separated by chromatography?
Answers: 1
Chemistry, 23.06.2019 03:00, mullerma
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
Answers: 3
Which of the following can’t be separated into simpler substances or converted into another substanc...
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