Ozone, o3 methane, ch4 oxygen gas, o2 all of these may be classified as a) ionic compounds b) covalent compounds c) inorganic compounds d) nonreactive compounds the correctly balanced equation for h₂o₂ → h₂o + o₂ is a) h₂o₂ → 2h₂o + o₂ b) h₂o₂ → h2o + 2o₂ c) 2h₂o₂ → 4h₂o + o₂ d) 2h₂o2 → 2h₂o + o₂

Asap time is ! best answer gets compose at least one well-developed paragraph on the following: define the term concurrent powers, and give an example of a concurrent power of government.

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.