Chapter 2: Q83P (page 84)
For what type of compound are we unable to write a molecular formula?
Short Answer
Ionic compounds are not represented by molecular formula but are represented by empirical formula.
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Chapter 2: Q83P (page 84)
For what type of compound are we unable to write a molecular formula?
Ionic compounds are not represented by molecular formula but are represented by empirical formula.
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List two differences between a compound and a mixture.
Fluorite, a mineral of calcium, is a compound of the metal with fluorine. Analysis shows that a 2.76-g sample of fluorite contains 1.42 g of calcium. Calculate the (a) mass of fluorine in the sample; (b) mass fractions of calcium and fluorine in fluorite; (c) mass percents of calcium and fluorine in fluorite.
How can ionic compounds be neutral if they consist of positive and negative ions?
Each scene below represents a mixture. Describe each one in terms of the number of elements and/or compounds present.

Classify each substance in Problem 2.3 as an element, compound, or mixture, and explain your answers.
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