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The tendency of an element to react is closely related to A. its atomic mass. B. attractions between its atoms. C. the number of valence electrons in atoms of the element. D. the ratio of protons to neutrons in atoms of the element.
Weegy: The tendency of an element to react is closely related to the number of valence electrons in atoms of the element. (More)
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Updated 194 days ago|2/21/2015 11:51:46 PM
An industrial process makes calcium oxide by decomposing calcium carbonate. Which of the following is NOT needed to calculate the mass of calcium oxide that can be produced from 4.7 kg of calcium carbonate? A. the balanced chemical equation B. molar masses of the reactants C. molar masses of the product D. the volume of the unknown mass
Question
Updated 9/28/2012 11:01:39 AM
Answer is D.the volume of the unknown mass
Here is explain of your problem. First you have to write the equation: $Ca CO3\rightarrow CaO+CO2$ Then compute the mols of Ca CO3 Then compute the mols of CaO AND AT LAST THE MASS OF CaO
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