Hydrogen (H), oxygen (O), and Nitrogen (N) are all examples of which of the following? all of these are correct

elements

compounds

molecules

What is the mass of 4 molecules of co2

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)

Describe the basic structure of the atom