1) Determine the value of the enthalpy change, AHrxn, for the following reaction using the information below. 2 Fe2O3(s) + 3 C(graphite) — 4 Fe(s) + 3 CO2(g)
C(graphite) + O2(g) + CO2(g)
AH=-393.5 kJ/mol
8 Fe(s) + 6 O2(g) → 4 Fe2O3(s)
AH= -3296.8 kJ/mol

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.