Balance the equation: Fe + O2 Fe2O3
What will be an ideal response?
Question 2
14 g of nitrogen will yield ________ g of nitrogen dioxide.
N2 + 2 O2 2 NO2
A) 23
B) 46
C) 92
D) 194
Question 3
Why is HF in water considered a weakly acidic solution, while HCl and HBr in water are considered strongly acidic solutions?
A) HF does not dissolve in water.
B) HF only partially dissociates into ions in water.
C) HF has a weak conjugate base, .
D) Both B and C are correct.
