A system being studied is classified as an open system. Transferred out of the system is 75 J of energy. The energy is converted to heat, mechanical, and
electrical energy. If mechanical energy measured 20 J and electrical energy
measured 20 J, how many joules were converted to heat energy?*

Asample of neon occupies a volume of 375 ml at stp. what will be the volume of neon if the pressure is reduced to 90.0 kpa? a. 422 ml b. 422 l c. 333 ml d. 333 l

Find the number of moles of argon in 364g of argon.

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing