Number of results: 17,194
When 1.24g of an organic compound with the formula CxHyOz is burned in excess oxygen, 1.76g of carbon dioxide and 1.08g of water vapor are obtained. What is the empirical formula of the compound? Determine the moles of CO2 in 1.76grams, that will give you the moles of C in the...
Tuesday, August 23, 2005 at 6:22pm by kevin
Assume 12 moles of HCL per liter: To solve for the molarity first, compute the total weight of the solution. Since, molarity is equal to moles/liter, assume that you have a total volume of 1L. 1L converted to mL is equal to 1.00 x10 ^3 mL. This multiplied by the density is ...
Tuesday, January 22, 2013 at 8:09pm by Devron
So the moles of H2O is equal to the mols of HCl. Thanks
Tuesday, June 24, 2008 at 6:30pm by Amanda
The number of moles of H2O produced in reaction of 50ml 1.0 M HCl and 50mL 1.0 M Naoh
Tuesday, June 24, 2008 at 6:30pm by Amanda
GIVEN THE FOLLOWING CHEMICAL EQUATION: 3 +Cu +8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O. 1).HOW MANY MOLES OF Cu(NO3)2 ARE PRODUCED WHEN 3 MOLES OF Cu REACT? 2).HOW MANY MOLES OF Cu MUST REACT TO PRODUCE 4 MOLES OF NO? 3). If 4 moles of NO ARE PRODUCED HOW MANY MOLES OF h2o are also ...
Monday, July 14, 2008 at 6:58pm by Persia
Based on the balance equation 2C6H14+19O2 gives 12CO2+14H2O calculate the moles of CO2 formed when G moles of H2O formed
Monday, February 18, 2008 at 3:46am by Anonymous
1.05 g of O2 is 1.05/32 = 0.0328125 moles 1.22 g of H2 is 1.22/2.016 = 0.60516 moles O2 is the limiting reactant. There is more than enough H2 to combine with the available oxygen. Each mole of O2 forms 2 moles of H2O, according to the reaction 2H2 = O2 -> 2H2O Therefore, ...
Sunday, March 9, 2008 at 4:10pm by drwls
261 cm^3 has a mass of 260 g and that is 260/18 = 14.44 moles of H2O. Each mole has 6.02*10^23 molecules, and each molecule has 10 protons. 14.44 x 6.02*10^23 x 10 = __?__ protons Multiply that by e = 1.60*10^-19 Coulombs per proton for the number of coulombs
Monday, March 31, 2008 at 1:20am by drwls
Okay, this is what I think... it seems to be too easy. So the reaction produces 6 moles of CO2 and 6 moles of H2O, that mean they have a ratio of 1 to 1. In other word, when you have 174 moles of H2O, then you'll also have 174 moles of CO2... so there isn't really any ...
Friday, May 16, 2008 at 3:25pm by Jake1214
3Cu+8HNO3--> 3Cu(NO3)2+ 2NO+4H2O How many moles of HNO3 are required to react with 6 moles of Cu? How many moles of Cu(NO3)2 are produced when 3 moles of Cu react? How many moles of Cu must react to produce 4 moles of NO? If 4 moles of NO are produced, how many moles of H2O...
Thursday, July 24, 2008 at 6:30pm by Andy
When 2.50 mol of Mg3N2 are allowed to react according to the following equation, how many moles of H2O also react? Mg3N2 + 6H2O ---> 3Mg(OH)2 + 2NH3
Thursday, August 28, 2008 at 10:10pm by Soojung
Chemistry 2 AP
The chemical equation is: (NH4)2Cr2O7 --> Cr2O3 + N2 + 4H2O Find the mass of 1 mole of (NH4)2Cr2O7. Divide 10.8g (NH4)2Cr2O7 by the mass of 1 mole to get the number of moles. The number of moles of N2 and of Cr2O3 are the same as the number of moles of (NH4)2Cr2O7. The ...
Wednesday, September 3, 2008 at 9:02pm by GK
(a) Convert the grams of CO2 to moles of CO2 by dividing grams of CO2 by the molar mass of CO2. Moles of CO2 = moles of carbon, C. Multiply moles of C by 12.011g/mol to get grams of carbon in the sample. (b) Find the moles of H2O in a similar way. Moles of H = (2)(moles of H2O...
Tuesday, September 16, 2008 at 7:57pm by GK
The volume of air inhaled in 1 hour is (60 min/hr)(15 br./min) = 900 breaths (900 br.)(0.500L/breath) = 450 L To find moles of H2O, use the Ideal Gas Law: PV = nRT 1 atm = 760 mm Hg 47.1mmHg/760 mmHg/atm = 0.061974 atm P = 0.061974 atm for water vapor R = 0.08206 L.atm/K.mol T...
Sunday, October 19, 2008 at 8:37pm by GK
college chemistry!! need help now!!
Your question has already been answered here: http://Jiskha.com/display.cgi?id=1224463048 The moles of a gas in a mixture, in this case water vapor,depends on the partial pressure of that gas independently of any other gases present. That comes out of Dalton's Law of Partial ...
Sunday, October 19, 2008 at 9:51pm by GK
I think temperature will be a factor. Ignoring that figure the moles of H2, and the moles of CO2, and the moles of H2O(l). ChangeEnthalpy=HformationCO*molesCO -HeatformationH2O*molesH20 Now the problem. Heat of Formation is given in tables at some standard temperature, usually...
Monday, November 3, 2008 at 11:25am by bobpursley
Ca(OH)2 + H2SO4 -> 2 H2O + CaSO4 The molar mass of Ca(OH)2 is 40 + 2*17 = 74 g/mole. So you consume 3.15 moles of Ca(OH)2 and form twice as many moles of H2O. Use the ideal gas law to convert that to VAPOR volume. I don't see how dimensional analysis helps with this, except...
Friday, December 12, 2008 at 11:20am by drwls
ZnSO4xH20 ¨ ZnSO4 + xH2O No. of moles of H2O = mass molar mass = 43.86 18 = 2.4367 mols No. of moles of ZnSO4xH20 = mass molar mass = 100 (161 + 18x) mols No. of moles of ZnSO4xH20 = 1/x X no. of moles of H2O = 1/x X 2.4367 = i.e. 2.4367/x mols Therefore, 2.4367/...
Thursday, January 22, 2009 at 12:25am by Jen
Chemistry- please check my work
Find the moles of MgSO4 by dividing 95.00g by the formula mass of MgSO4. Multiply the moles of MgSO4 by 3 ions / mole to get the moles of ions in solution. Convert 95g of H2O to moles. Add moles of ions to moles of H2O to get total moles. The moles fraction of H2O is: X(...
Monday, February 23, 2009 at 9:19pm by GK
No, you calculated the number of atoms in the molecule. The question is for moles. There are two moles of hydrogen per mole of H2O and one mole 0f oxygen per mole of H2O. Therefore, for 2 moles of H2O, there are 4 moles of hydrogen and 2 moles of oxygen.
Monday, July 6, 2009 at 4:22pm by DrBob222