Answer:
bases are sour in taste whereas acids are not.
Explanation:
hope this helps ✌️
Answer: i) -444.0 KJ/mol.
ii) -8880 KJ/mol.
iii) -1660.56 KJ/mol.
Explanation:
- To solve this problem, we should mention the reported value of burning one mole of propane (ΔH°combustion = -2220 KJ/mol).
C₃H₈ + O₂ → 3CO₂ + 4H₂O
i) The energy released from burning 0.2 mol:
Using cross multiplication:
1.0 mol → -2220 KJ/mol
0.2 mol → ??? KJ/mol
The energy released = (-2220 KJ/mol x 0.2 mol) / (1.0 mol) = -444.0 KJ/mol.
ii) The energy released from burning 4.0 mol:
Using cross multiplication:
1.0 mol → -2220 KJ/mol
4.0 mol → ??? KJ/mol
The energy released = (-2220 KJ/mol x 4.0 mol) / (1.0 mol) = -8880 KJ/mol.
iii) The energy released from burning 33.0 g of propane:
Firstly, we should convert the number of grams to moles.
n = mass/molar mass = (33.0) / (44.1 mol/g) = 0.748 mol.
Using cross multiplication:
1.0 mol → -2220 KJ/mol
0.748 mol → ??? KJ/mol
The energy released = (-2220 KJ/mol x 0.748 mol) / (1.0 mol) = -1660.56 KJ/mol.
Answer:
An isomer is a molecule with the same molecular formula as another molecule, but with a different structure. Isomers contain the same number of atoms of each element, but have different arrangements of their atoms. Isomers do not necessarily share similar properties, unless they also have the same functional groups.
It’s B :) try learning next time
