A balanced chemical reaction obeys the law of conservation of mass, because the same number of atoms of each element must appear on both sides of the equation for the reaction … , and in any actual reaction, the same exact atoms will be found on both sides of the equation.
Answer:
visbility if that is an answer
Explanation:
First we need to find the number of moles of both K and O reacted
K - 0.779 g / 39 g/mol
= 0.02 mol
the mass of O₂ reacted = 1.417 g - 0.779 g = 0.638 g
O₂ moles = 0.638 g / 32 g/mol
= 0.02 mol
the number of both K and O₂ moles reacted are equal
therefore stoichiometry of K to O₂ reacted are 1:1
then the formula of potassium superoxide is KO₂
Yes
Explanation:
Valence electrons on the periodic table of elements shows a repeating or periodic pattern. There is a noticeable pattern that can be deduced from the valence electrons in the orbitals of atoms.
Valence electrons are the electrons in the outermost shell of an element
The periodic table arranges elements based on their atomic numbers. This number denotes the number of protons or electrons an atom contains.
- The table is divided into groups which are the vertical columns into which elements are classified.
- The horizontal rows are called periods.
- A period begins with one valence electron and ends with an atom having complete outer shell structure of an inert gas.
- Down a group the valence electron is the same. The group number denotes the number of valence electrons in a group. Group 1 has just one valence electron in their outermost shell.
Learn more:
Valence electrons brainly.com/question/12580690
Periodic table brainly.com/question/2014634
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