Chemistry: stoich


4. Suppose that an excess of propane, C3H8 , burns in 320 g of oxygen, How many moles of water will be formed?
C3H8 + 5 O2 --> 3 CO2 + 4 H2O
(1 point)
6.02 E 23 moles
1600 moles
4.0 moles
8.0 moles

asked by Hannah
  1. molar mass of O₂ is 32 g

    5 moles O₂ yields 4 moles H₂O

    posted by Scott
  2. 5:4=320:x,so 5x=1280 therefore x =256mol of water

    posted by semisi caucau
  3. You didn't convert 320 g O2 to mols first.
    mols O2 = 320/32 = 10; then
    10 x 5/4 = 8.00 mols H2O formed.

    posted by DrBob222
  4. 8.0 moles

    posted by vvvvv
  5. 4.0 moles

    posted by vvvvv

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chem

    Could someone please walk me through step by step on how to do this. Propane (C3H8) burns in oxygen to produce carbon dioxide and water. C3H8(g) + 5 O2(g) 3 CO2(g) + 4 H2O(g) Calculate the mass of CO2 that can be produced if the
  2. Chemistry

    Stoichiometry-I have the basic strategy, but am still stuck on how to do them.example...propane burns in oxygen according to the following reaction C3H8 + O2 produces CO2 + H20 a. How many moles of CO2 are formed when 2.8 g of
  3. chemistry

    If 120. g of propane, C3H8, is burned in excess oxygen according to the following equation: C3H8 + 5O2  3CO2 + 4H2O, how many grams of water are formed?
  4. Chemistry

    The combustion of 132 g of propane, C3H8, with excess oxygen liberates 6.6x10^3 kj of heat. What is the enthalpy change for the reaction below: C3H8(g) + 5O2(g) -> 3CO2(g) + 4H2O(l)
  5. Chemistry

    Consider the combustion of propane: C3H8(g)+5O2(g) yields 3CO2(g) + 4H2O(l) delta H= -2221 kJ Assume that all of the heat comes from the combustion of propane. Calculate delta H in which 5.00g of propane is burned in excess oxygen
  6. Science

    Consider the combustion of propane: C3H8(g)+5O2(g) yields 3CO2(g) + 4H2O(l) delta H= -2221 kJ Assume that all of the heat comes from the combustion of propane. Calculate delta H in which 5.00g of propane is burned in excess oxygen
  7. Chemistry

    Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?
  8. chem

    Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?
  9. chemistry

    Q3: In the combustion reaction of 149g of propane(C3H8) with excess oxygen, what volume of carbon dioxide(CO2) is produced at STP? (note: balance the reaction first) C3H8 + O2  3CO2 + H2O
  10. Chemistry

    Propane (C3H8) burns according to the following balanced equation: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) Calculate ΔH∘rxn for this reaction using standard enthalpies of formation. (The standard enthalpy of formation of

More Similar Questions