There are six different reactions you can access in the simulation using the drop-down menu. Which of the following are second-order reactions? 1. C2H6 ---> 2 CH3 2
2. N2O5 ---> 4 NO2 + O2
3. 2 HI ---> H2 + I2
4. 2 N2O --> 2 N2 + O2
5. 2 NO2 ---> 2 NO + O2

Which feature do highland climates have that lower elevation areas do not?

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

Hey can you me with this i really need y’all