What is an electrically charged atom? A. ion B. isotope C. molecule D. compound
2 answers:
Answer: Option (A) is the correct answer.
Explanation:
When a neutral atom loses an electron then it acquires a negative charge and if a neutral atom gains an electron then it acquires a positive charge. Hence, an ion is formed in both the cases.
For example, sodium on losing an electron become ion.
An isotope is defined as the specie which contains same number of protons but different number of neutrons.
For example, and
are isotopes.
A molecule is defined as a substance that contains chemically combined two or more number of atoms of an element.
For example, is a molecule.
Whereas a compound is defined as a substance in which different atoms of different elements chemically combine together in a fixed ratio by mass.
For example, is a compound.
Thus, we can conclude that an ion is an electrically charged atom.
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Answer:
The equation to show the the correct form to show the standard molar enthalpy of formation:
Explanation:
The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements, with all substances in their standard states.
Given, that 1 mole of gas and 1 mole of
liquid gives 2 moles of HBr gas as a product.The reaction releases 72.58 kJ of heat.
Divide the equation by 2.
The equation to show the the correct form to show the standard molar enthalpy of formation:
Answer:
for the reaction is 18.05
Explanation:
Equilibrium constant in terms of partial pressure () for this reaction can be written as-
where and
are equilibrium partial pressure of
and
respectively
Hence = 18.05
So, for the reaction is 18.05