Experiment: Group 1 drinks 500 mL of coffee a day, group 2 drink 500 mL of tea a day, group 3 is a control group. At the end of 60 days all participants' blood pressure is tested. What considerations do the researchers need to take in order to ensure this experiment is fair?​

19. at high pressures, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions, and why? eman- it is much less because real gas partides are not moving. there is no difference because the gas laws are always obeyed. it is much less because at high pressures the temperature drops. it is much greater because real gas partides take up space.

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

Apump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump