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Chapter 2: Q43P (page 40)
Write thenotation for each atomic depiction
(a)
(b) 
(c)
In an element A represents the mass number and while Z represents atomic number of an element.
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7 Esters, RCOOR鈥�, are formed by the reaction of carboxylic acids, RCOOH, and alcohols, R鈥橭H, where R and R鈥� are hydrocarbon groups. Many esters are responsible for the odors of fruit and, thus, have important uses in the food and cosmetics industries. The 铿乺st two steps in the mechanism of ester formation are
Identify the Lewis acids and Lewis bases in these two steps.
Define atomic number and mass number which can vary without changing the identity of the element?
Galena, a mineral of lead, is a compound of the metal with sulfur. Analysis shows that a 2.34-g sample of galena contains2.03 g of lead. Calculate the mass percent of lead and sulfur in galena.
An aqueous solution is 10% glucose by mass . Calculate its freezing point, boiling point at 1atm, and osmotic pressure.
The mole is defined in terms of the carbon-12 atom. Use the definition to find (a) the mass in grams equal to 1 atomic mass unit; (b) the ratio of the gram to the atomic mass unit.
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