Chapter 2: Q65P (page 83)
Are ions present in a sample ? Explain.
Short Answer
There are no ions present in a sample because it is a molecule (covalent compound).
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Chapter 2: Q65P (page 83)
Are ions present in a sample ? Explain.
There are no ions present in a sample because it is a molecule (covalent compound).
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The tap water found in many areas of the United States leaves white deposits when it evaporates. Is this tap water a mixture or a compound? Explain.
Does the percent by mass of each element in a compound depend on the amount of that element used to make the compound? Explain.
(a) Does the percent by mass of each element in a compound depend on the amount of compound? Explain.
(b) Does the mass of each element in a compound depend on the amount of compound? Explain.
Dolomite is a carbonate of magnesium and calcium. Analysisshows that 7.81 g of dolomite contains 1.70 g of Ca. Calculate themass percent of Ca in dolomite. On the basis of the mass percentof Ca, and neglecting all other factors, which is the richer sourceof Ca, dolomite or fluorite (see Problem 2.20)?
What is the key difference between an element and a compound?
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