Standard Enthalpy of Formation Al2O3 (s)

Fe2O3(s)
NH4ClO4(s)
AlCl3(s)
NO(g)
H2O(g)
ΔHf (kJ / mol)

-1676

-826

-295

-704

90.0

-242

(10 Points) Given the information in the table above, calculate the ΔHorxn for the following chemical reaction: (SHOW ALL WORK!)
3Al(s) + 3 NH4ClO4(s) → Al2O3(s) + AlCl3(s) + 3NO(g) + 6H2O(g)

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.