Two humid air streams are adiabatically mixed at 1 atm pressure to form a third stream. the first stream has a temperature of 40°c, a relative humidity of 40 percent, and a volumetric flow rate of 3 l/s, while the second stream has a temperature of 15°c, a relative humidity of 80 percent, and a volumetric flow rate of 1 l/s. calculate the third stream’s temperature and relative humidity.

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.

Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not