Tuesday
September 16, 2014

Posts by Persia


Total # Posts: 11

CHEMISTRY
IN THE REACTION P4 +5 O2= 2P 2 O5. HOW MANY MOLES OF O2 ARE CONSUMED EACH TIME 0.5 MOLES OF P2 O5 ARE FORMED?
July 24, 2008

Chemistry
THE MOLAR MASS OF CALCIUM OXALATE,CaC2O4 IS 128G/MOLE. WHAT % OF CARBON IS CALCIUM OXALATE?
July 24, 2008

Chemistry
4HN3 + 5 O2 = 4NO + 6 H20. How many grams of O2 are required to produce 90 grams of NO?
July 23, 2008

CHEMISTRY
Would you please further explain the steps to sloving #2? Thanks
July 22, 2008

CHEMISTRY
1).What is the pressure in a 1.5 L vessel containing 0.25 moles of O2 if the temperature is 37 degrees celcius? 2).The molar mass of MgCO3 is 84g/mole. How many moles are in 12.60g of MgCO3?
July 22, 2008

CHEMISTY
Dr. Bob222 I'm not following. Would you please further explain? Thanks
July 21, 2008

CHEMISTY
WHAT IS THE MOLARITY OF A SOLUTION PREPARED BY DISSLOVING 4.92 GRAMS OF CALCIUM NITRATE, Ca(NO3)2 in 250 mL OF WATER?
July 21, 2008

Chemistry
What volume (in liters) is occupied by 0.01 moles of carbon monoxide, CO, at 9 degrees celcius and 0.973 atm?
July 21, 2008

Chemistry
Ethane, C2H6 has a molar heat of vaporization of 15 kj/moles. How many kilojoules of energy are required to vaporize 5 grams of Ethane?
July 21, 2008

chemistry
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 ...
July 14, 2008

Chemistry
Given the following chemical equation: 3 Cu + 8 HNO3 = 3 Cu(NO3)2 + NO + 4 H2O. How many moles of HNO3 are required to react with 6 moles of Cu?
July 14, 2008

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