When the football is on its way up, 1. BLANK energy is being transformed into 2. BLANK energy.
2 answers:
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Answer:
The answer is
<h2>19.31 g/cm³</h2>Explanation:
The density of a substance can be found by using the formula
From the question
mass of gold = 475.09g
volume = 24.6 cm³
The density of the gold is
We have the final answer as
<h3>19.31 g/cm³</h3>Hope this helps you
The balanced chemical equation for the combustion of butane is:
Δ = Σ
Δ
-Σ
Δ
= =[-3148kJ/mol+(-2418.2kJ/mol)]-[(-251.2kJ/mol)+0]
= -5315 kJ/mol
Calculating the enthalpy of combustion per mole of butane:
Therefore the heat of combustion per one mole butane is -2657.5 kJ/mol
Correct answer: -2657.5 kJ/mol