Match the place to the letter that represents it on the map.

1. lake titicaca

i

2. brazil

e

3. andes mountains

a

4. peru

c

5. atacama desert

d

6. amazon basin

h

7. chile

b

8. suriname

f

9. patagonia

g

a) The reduction reaction for Cu2O is

Cu2O + H2 ---> 2Cu(s) + H2O

b) the enthalpy of reaction is

ΔHrxn = ∑ΔHformation of products - ∑ΔHformation of reactants

We know that

ΔHformation of elements in their native state = 0 = ΔHf (H2) = ΔHf (Cu)

ΔHrxn = ΔHf (H2O) - ΔHf (Cu2O) = -247.73 - (-175.31) = -72.42 kJ

So as enthalpy of reaction is negative the reaction is exothermic and heat will be evolved during the reaction