Fifty-five-gallon drums are being filled with 2-butoxyethanol. The drums are being splashfilled at the rate of 30 drums per hour. The bung opening through which the drums are being filled has an area of 8 cm2. Estimate the ambient vapor concentration if the ventilation rate is 3000 ft3/min. The vapor pressure of 2-butoxyethanol is 0.6 mm Hg under these conditions

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?

How does radioactive dating allow scientist to accurately date rocks