D, air and water currents
this is true that compounds are made up of more than one type of element bound together in fixed ratios
because compound is a mixture of two or more elements in a ratio
Answer: B) -4819 kJ
Explanation:
The balanced reaction for combustion of octane is:
To calculate the number of moles, we use the equation:
given mass of octane = 100.0 g
Molar mass of octane = 114.33 g/mol
Putting in the values we get:
According to stoichiometry:
2 moles of octane give heat = -11018 kJ
Thus 0.8747 moles of octane give =
Thus -4819 kJ of heat is released by 100.0 g of octane assuming complete combustion.
Atoms. Elements have a distinct number of protons to identify themselves. For example, I have pure carbon and I want to turn it into oxygen, I could theoretically add 2 more protons to the carbon nucleus and it would become an oxygen atom.
Answer:
Reaction 1: -450 kJ/mol
Reaction 2: -81 kJ/mol
Explanation:
These were the correct answers on Edge, 2022. Hope it helps!