Answer:
In the criss-cross method, the numerical value of the ion charge of the two atoms are crossed over, which becomes the subscript of the other ion. Using this technique, we will write the chemical formula of the given compounds.
Criss cross the absolute values to give Al2O3. To find the formula for magnesium oxide:- The oxidation number of Mg is +2 and oxygen is -2. Criss cross the absolute values to give Mg2O2In this example there is a common factor of 2 so divide by 2 to give MgO.
Answer:
Noble gases have a complete valence electron shell making them stable and nonreactive.
Explanation:
I don't know how 5°C cooled to 85°C but the answer would be 12.878L
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I would go with b: the reproducible of a measured value. but im not 100%
