Carbon 14 and carbon 12 are the same element because they contain the number of proton in the periodic table. but the different in number (14 and 12) is from the neutron
Sandstone is a sedimentary rock. The characteristics that you would <span>look for in a piece of sand stone are B. rock layers have small rocks or fossils in them. </span>
A combustion reaction is a reaction that reacts in the presence of oxygen molecules. Methane will release -3115 kJ/mol of heat.
<h3>What is a combustion reaction?</h3>
A combustion reaction includes the reaction between the chemical reactant and oxygen molecule to produce the product. The combustion reaction between methane and oxygen is given as:
CH₄(g) + 2O₂ (g) → CO₂(g) + 2H₂O (l), ΔH = -890 kJ/mol
The stoichiometry coefficient from the reaction gives 1 mole of methane releases -890 kJ/mol enthalpy.
So, 3.5 moles methane will release = 3.5 × -890 = -3115 kJ/mol
Therefore, -3115 kJ/mol of heat is released.
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This form of the oxygen molecule is Ozone, O3.
