The heat of a chemical reaction (change of enthalý) may be calcualted as the heat of formation of the products less the heat of formation of the reactants.
Then, for the given equation, the total heat of the combustion of pentnae is:
<span>ΔH°f = 5* ΔH°f CO2(g) + 6ΔH°f H2O(g) - ΔH°f C5H12(g) - 8ΔH°f O2(g)
</span>The standard heat of formation of O2(g) is zero because that is its natural state.
Now you can replace in the equation the values given:
<span>ΔH° = 5*(-393.5 kJ/mol) + 6*(-241.8kj/mol) - (-35.1kJ/mol) - 0
ΔH° = -3,383.2 kJ/mol
</span>
Then, the heat of the combustion of pentane is -3,383.2 kj/mol
Answer:
0.72 m3
Explanation:
Primero debes calcular el número de litros que vas a tener en total, para esto conviertes 8 horas a minutos, que son 480 minutos, y lo multiplicas por el flujo de 1.5 litros por minutos, por lo que obtendrás 720 litros. Sabiendo que 1000 litros son 1 m3, podemos calcular que 720 litros son 0.72 m3.
Answer:
The answer is true
Explanation:
Products in chemical reactions are rearranged during the reaction, the atoms end up in different combinations in the products. This makes the product new substances that are chemically different than the reactants
Answer:
Question
Explanation:
Identification of problem is the first scientific method. This is overtaken by asking questions
Answer:
A. Oxygen is an element because its most basic unit is a single type of atom.
Explanation:
Oxygen is the chemical element with the symbol O and atomic number 8.