How do heavy metals like cobalt, zinc, mercury, and lead get into the environment, and why are they harmful?

Which characteristics can be used to differentiate star systems? check all that apply.

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n