A researcher accidentally left a tank of gas in a cold storage unit over
night. After leaving it overnight, the pressure gauge read 0.91 atm in a
storage unit whose temperature was 250 K. If the temperature of the
room was 298 K and the tank did not experience a change in volume, what
was the tank's initial pressure?*

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

How to convert a density of 0.791g/cm3 to lb/ft3

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