Ch100: Fundamentals for Chemistry 1Ch7: Quantitative Composition of Compounds1/14/20191. You have a 26.98 g piece of aluminum.a) How many moles are in 26.98 g of Al?b) How many atoms are in 26.98 g of Al?c) How many moles are in 5.00 g of Al?d) How many atoms are in 5.00 g of Al?2. You have a 20.00 g sample of chlorine gas.a) How many moles of Cl2 are in the 20.00 g sample?b) How many molecules are in 20.00 g of Cl2?c) How many Cl atoms are in 20.00 g of Cl2?d) How many moles of Cl2 are in a 5.00 g sample?e) How many molecules of Cl2 are in 5.00 g?Ch100: Fundamentals for Chemistry 2Ch7: Quantitative Composition of Compounds1/14/20193. You have a 10.00 g dry sample of AlCl3.a) What is the molecular mass of AlCl3?b) How many moles of AlCl3 are in the sample?c) How many moles of Al3+ are in the sample?d) How many moles of Cl- are in the sample?e) How many grams of Al3+ are in the sample?f) How many grams of Cl- are in the sample?4. You dissolve 25.00 g of AlCl3 in 1.0 kg of de-ionized H2O.a) What is the mass percent of Al3+ and Cl- in AlCl3?b) What is the mass percent of AlCl3 in the whole aqueous solution (including the water)?c) How many grams of Al3+ and Cl-, respectively, are dissolved in solution?d) What is the mass percent of the Al3+ and Cl- ions in the whole aqueous solution (including the water)?Ch100: Fundamentals for Chemistry 3Ch7: Quantitative Composition of Compounds1/14/20195. You have a flask containing 150. g of H2O.a) How many moles of H2O are in the flask?b) How many molecules of H2O are in 150. g?c) What is the mass percent of H and O, respectively, in H2O?d) How many grams of oxygen are in this water
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