The average person in the United States is exposed to the following amount of radiations annually. Rank the following source of radiation in the increasing order of their ability to cause harm to living tissue.
Weapons-test fallout 1 millirem
Cosmic radiation 26 millirems
Air (radon-222) 0.198 rems
Diagnostic X rays 0.040 rems
Television tubes 11 millirems
Nuclear medicine 0.015 rems
Ground 33 millirems
Rank from highest to lowest. To rank items as equivalent, overlap them.

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?

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