7. Balance each redox equation.
a. Al(s) + Cl2(g) → AICI (s)

b. Al(s) + Fe, Og(s) → Al2O3(s) + Fe(s)

c. Cl (g) + KOH(aq) →KCIO,(aq) + KCl(aq) + H2O11

d. HNO3(aq) + H, S(g) → S(s) + NO(g) + H2011

e. KIO (aq) + Kl(aq) + HCl(aq) → KCl(aq) + 1,(s) + H2O11

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

Which material burns faster? metal aluminum

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.