the answer is because when you research that would be the answer
Its A because the number if every element on one side is equal to the number of elements on the other?
<span>Total mass = 2.75g
Mass % of Mg = 1.0g x 100/2.75g = 36.36 %
Mass % of O = 1.75g x 100/2.75g = 63.64 %
Mol of Mg = 36.36/24 = 1.515
Mol of O = 63.64/16 = 3.977
Ratio of Mol of Mg and O in the substance = (1.515 : 3.977) x 2 = 3 : 8
The empirical formula of substance is Mg3O8</span>
Gasoline is burned having the chemical reaction:
Gasoline + 02 --------------------> CO2 + H20
Since conversion of gasoline into carbondioxide(gas) and water(liquid) is the the chemical change.
Others are physical change.
So , according to above explanation.
E) gasoline is burned is the correct answer.
Answer:
They are both halogens and have the same number of electrons on their outer shell.
Any element with 7 electrons in the outermost shell will have similar properties. Thus other elements in the same column of the periodic table as chlorine will have similar properties.
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