)nitrogen from a gaseous phase is to be diffused into pure iron at 700°c. if the surface concentration is maintained at 0.12 wt% n, what will be the concentration (in weight percent) 4.5 mm from the surface after 8.0 h? the diffusion coefficient for nitrogen in iron at 700°c is 4.6 × 10-10 m2/s.

In a spacecraft, the following reaction occurs: co2(g) + 2lioh(s) -> lico3(s) + h2o(i) (i attached picture of equation) how many liters of carbon dioxide will 4 moles of lithium hydroxide (lioh) absorb? (one mole of any gads occupies 22.4 l under certain conditions of temperature and pressure. assume those conditions for this equation.) 45l 6.0l 3.0l 34l

Gymnast always perform on padded mats. how does the mats protect the gymnast

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?