The rate of diffusion of methane gas, CH4, is four times the rate of diffusion of an unknown gas under the same conditions of temperature and pressure. What is the molar mass of the unknown gas

Type the letter that represents the correct location for each particle type below.

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.