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The electron has a negative charge and remains in the electrosphere, around the atomic nucleus (where the protons are inside with their positive charges and neutrons with neutral charge).
Therefore, It has a negative charge and is located in orbitals around the nucleus.
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Heat released in the Methanol combustion reaction : 1.701.10³ kJFurther explanation
The change in enthalpy in the formation of 1 mole of the elements is called enthalpy of formation
The enthalpy of formation measured in standard conditions (25 ° C, 1 atm) is called the standard enthalpy of formation (ΔHf °)
Determination of the enthalpy of formation of a reaction can be through a calorimetric experiment, based on the principle of Hess's Law, enthalpy of formation table, or from bond energy data
Delta H reaction (ΔH) is the amount of heat / heat change between the system and its environment
(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)
The value of ° H ° can be calculated from the change in enthalpy of standard formation:∆H ° rxn = ∑n ∆Hf ° (product) - ∑n ∆Hf ° (reactants)
We complete the data values for ∆Hf° of compounds
Combustion reaction that occurs :
CH₃OH (ℓ) + 3O₂ (g) -> 2CO₂ (g) + 4H₂O (g) ΔH°rxn = –1454 kJ/mol
molar mass Methanol = 32.04 g/mol
mol of 75 g Methanol :
Because from the reaction above, for every 2 mol CH₃OH , ΔH°rxn = –1454 kJ/mol, then for 2.3408 mol the heat is
the heat capacity of the bomb calorimeter
the combustion of sugar
the heat capacity of a liquid and solid