Chemistry

posted by .

a 9.85 g sample of an unknown metal M is burned in the presence of excess oxygen, producing the oxide M2O3 (s) and liberating 57.8kJ of heat at constant pressure. What is the identity of the metal?

4M(s) + 3O2(g) yields 2M2O3(s)

  • Chemistry -

    Do you have a table of heats of combustion?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chem

    A 0.370mol sample of a metal oxide (M2O3) weighs 55.4g. How many moles of O?
  2. chemistry

    a 47.7L sample of a gaseous hydrocarbon, measured at 1.00atm and 25degreesC is burned in excess oxygen, liberating 4.33X10^3 kJ of heat at a constant pressure. what is the identity of the hydrocarbon?
  3. Chemistry

    In an experiment 1.015 g of a metal carbonate, containing an unknown metal M, is heated to give the metal oxide and 0.361 g CO2. MCO3(s) + heat MO(s) + CO2(g) What is the identity of the metal M?
  4. chemistry

    combustion of 0.356g of an unknown metal sample in oxygen gives 0.452g of an oxide in the form of mO2, Identify the unknown metal?
  5. chemistry

    A 79.9-L sample of a gaseous hydrocarbon, measured at 1.00 atm pressure and 25.0°C, is burned in excess oxygen, liberating 4.24 × 10^3 kJ of heat at constant pressure. What is the identity of the hydrocarbon?
  6. Chemistry

    If 200 g. of an unknown metal oxide, M2O3, upon reaction with chlorine yields 376 g of M2Cl2, then the metal M is: a. Indium b. Aluminum c. Gallium d. Silicon e. boron
  7. Chemistry

    Consider the decomposition of a metal oxide to its elements, where M represents a generic metal: M2O3 (s) <=> 2M (s) + 3/2 O2 (g) Given a delta Gf: -770 Kj for the M2O3 0 Kj for the M 0 Kj for the O2 What is the standard change …
  8. Chemistry

    0.356 grams of an unknown metal reacts with oxygen to form 452 milligrams of the metal oxide. Identify the metal
  9. chemistry pls help me asap

    2.08g of metal Y react with 0.96g of oxygen to form a metal oxide.The empirical formula of the metal oxide is Y2O3.What is the relative atomic mass of metal Y.
  10. Chemistry

    A Sample of M2O3 weighing 11.205g is converted to 15.380g of MCL3, where M is the unknown metal, then what is the identity of M?

More Similar Questions