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18 Nov 2019
Can someone help me
13. How many atoms of Xe are there in 2624 g of Xe? 14. How many grams of Mg(OH)2 are there in 0.244 moles of Mg(OH)2? 15. How many grams of AI(NOs)s are there in 2.456 moles of AI(NOs)s? 16. What is the mass in grams of 1.00 x 1012 lead (Pb) atoms? 17. The density of water at 4 °C is 1.00 g/mL. How many water molecules are present in 2.56 - mL of water at this temperature? I8. Calculate the number of C, H, O atoms in 1.50 g of CsHi206 19. Calculate the percent composition, by mass, of Sn and O in the compound Sn02. 20. Calculate the percent composition, by mass, of all the elements in Cas(PO4)2 21. How many moles of Fe are present in 24.6 g of Fe2Os? 22. What is the empirical formula of a compound that contains 2.1% H, 65.3% O, and 32.6% S by mass?
Can someone help me
13. How many atoms of Xe are there in 2624 g of Xe? 14. How many grams of Mg(OH)2 are there in 0.244 moles of Mg(OH)2? 15. How many grams of AI(NOs)s are there in 2.456 moles of AI(NOs)s? 16. What is the mass in grams of 1.00 x 1012 lead (Pb) atoms? 17. The density of water at 4 °C is 1.00 g/mL. How many water molecules are present in 2.56 - mL of water at this temperature? I8. Calculate the number of C, H, O atoms in 1.50 g of CsHi206 19. Calculate the percent composition, by mass, of Sn and O in the compound Sn02. 20. Calculate the percent composition, by mass, of all the elements in Cas(PO4)2 21. How many moles of Fe are present in 24.6 g of Fe2Os? 22. What is the empirical formula of a compound that contains 2.1% H, 65.3% O, and 32.6% S by mass?
Tod ThielLv2
6 Jun 2019