Select all the correct answers. Which reactions are single displacement reactions?

2NaBr + CaF2 → 2NaF + CaBr2
SnO2 + 2H2 → Sn + 2H2O
4Na + O2 → 2Na2O
2KClO3 → 2KCl + 3O2
2Al + 6HCl → 2AlCl3 + 3H2

Asample of neon occupies a volume of 375 ml at stp. what will be the volume of neon if the pressure is reduced to 90.0 kpa? a. 422 ml b. 422 l c. 333 ml d. 333 l

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

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