Which of the following soil horizons is the deepest?
A) substratum
B) subsoil
C) topsoil
D) bottom soil
E) humus
Question 2
What is the number of moles of H2O produced if you combust 0.5 mole of CH4 according to the following balanced equation? CH4 + 2 O2 CO2 + 2 H2O
A) 2 moles
B) 4 moles
C) 6 moles
D) 8 moles
E) 1 mole
Question 3
20.9 kJ is equal to ________ kcal.
A) 5,000
B) 5.00
C) 873.6
D) 20