Determine if each of the following reactions will occur or not occur. 2 Sn + 2 HCl → SnCl + H2
Cu + Zn(NO3)2 → Zn + Cu(NO3)2
NiS + 2 HCl → NiCl2 + H2S(g)
CO(OH)2 + 2 HC2H302 Co(C2H302)2 + 2 H20
3 NaNO3 + K3PO4 -> Na3PO4 + 3 KNO3
2 AICI3 + 3 Hg(NO3)2 -> 2 Al(NO3)3 + 3 HgCl2

One mole of zinc has a mass of 65.4 grams. approximately how many atoms of zinc are present in one mole of zinc? 32 × 1023 atoms 6 × 1023 atoms 66 atoms 65 atoms

14. many depressants reduce small muscle control, making it harder for a. you to steer b. your mind to consider complex problems c. the eye to scan, focus, or stay still d. the kidneys to filter alcohol out of the bloodstream

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?