Answer:
a) 213.3 mg/L
b) 62.61 mg/L
c) 0.0225 mg/L
Explanation:
Theoretical oxygen demand (ThOD)is essentially the amount of oxygen required for the complete degradation of a given compound into the final oxidized products
a) Given:
Concentration of acetic acid, = 200 mg/L
Based on the reaction stoichiometry:
mass of = 60 g
mass of = 2(32) = 64 g
b) Given:
Concentration of ethanol, = 30 mg/L
Based on the reaction stoichiometry:
mass of = 46 g
mass of = 3(32) = 96 g
c) Given:
Concentration of sucrose, = 50 mg/L
Based on the reaction stoichiometry:
mass of = 342 g
mass of = 12(32) = 384 g
Answer:
solid goes on the first on and liquid goes on the sceond one
Potential energy because it’s a tense spring
Answer:
E) NaF and SrO
Explanation:
The ionic bonding occurs between atoms with a great difference in electronegativity. This usually happens between a metal and a non-metal.
<em>In which pair do both compounds exhibit predominantly ionic bonding? </em>
A) KCl and CO₂. NO. C and O are non-metals and present covalent bonding.
B) SO₂ and BaF₂. NO. S and O are non-metals and present covalent bonding.
C) F₂ and N₂O. NO. Both compounds contain non-metals and present covalent bonding.
D) N₂O₃ and Rb₂O. NO. N and O are non-metals and present covalent bonding.
E) NaF and SrO. YES. Na and Sr are metals while F and O are non-metals.