M ManzRDH Dinene RDH, BA 15+ Year Member 20+ Year Member Joined Sep 9, 2003 Messages 50 Reaction score 0 Feb 17, 2005 #1 Members don't see this ad. How many moles of H2O are produced in the combustion of 20g of glucose in excess 02? a-2/3 b-1/3 c-2/6 d 1/6 e none
Members don't see this ad. How many moles of H2O are produced in the combustion of 20g of glucose in excess 02? a-2/3 b-1/3 c-2/6 d 1/6 e none
Dentist 2 be Senior Member 10+ Year Member 7+ Year Member 15+ Year Member Joined Sep 10, 2004 Messages 628 Reaction score 0 Feb 17, 2005 #2 1) write a balanced equation: C6H12O6 + 6O2 --------> 6 H2O + 6CO2 (1 mol) (6 mol) (6 mol) (6 mol) 20g C6H12O6 (glucose) 2) convert substance being combusted into moles C6H12O6 : Molecular weight = 180 g/mol So, 20g/180g/mol = 1/9 mol of glucose 1 mol C6H12O6 : 6 mol H2O 1/9 mol C6H12O6 : X mol H2O x = 6/9 = 2/3 mol H2O So, the correct answer is A Upvote 0 Downvote
1) write a balanced equation: C6H12O6 + 6O2 --------> 6 H2O + 6CO2 (1 mol) (6 mol) (6 mol) (6 mol) 20g C6H12O6 (glucose) 2) convert substance being combusted into moles C6H12O6 : Molecular weight = 180 g/mol So, 20g/180g/mol = 1/9 mol of glucose 1 mol C6H12O6 : 6 mol H2O 1/9 mol C6H12O6 : X mol H2O x = 6/9 = 2/3 mol H2O So, the correct answer is A
M ManzRDH Dinene RDH, BA 15+ Year Member 20+ Year Member Joined Sep 9, 2003 Messages 50 Reaction score 0 Feb 18, 2005 #3 Thanks for your help. I purchased these cd's from someone on ebay. He put it together for DAT prep but I found some mistakes. I just wanted to make sure since CG isn't my strong point. Upvote 0 Downvote
Thanks for your help. I purchased these cd's from someone on ebay. He put it together for DAT prep but I found some mistakes. I just wanted to make sure since CG isn't my strong point.