chemistry

When magnesium burns in air, it reacts with oxygen and nitrogen, forming magnesium oxide and magnesium nitride. If 20.0L of air is available for this reaction, what mass of each compound can be formed? (Remember air is about 80% Nitrogen and 20% Oxygen)

asked by Chase
  1. 2Mg + O2 ==> 2MgO
    3Mg + N2 ==> Mg3N2
    20 mL air x 0.80 N2 = 16 mL N2
    20 mL air x 0.20 O2 = 4 mL O2.
    I assume we are dealing with STP conditions; therefore,
    mols N2 = 16/22.4 = ? and convert that to mols Mg3N2 then to grams. g = mols x molar mass.

    mols O2 = 4/22.4 = ? and convert to mols MgO, then to grams.

    Total = g MgO + grams Mg3N2.

    posted by DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chem 2

    If we burn a strip of magnesium in air, there will be two main products, magnesium oxide and magnesium nitride. If we then treat that mixture with water, the nitride ion is converted to ammonia. After boiling away the water and
  2. chemistry

    When magnesium is heated in air, it reacts with oxygen to form magnesium oxide. 2Mg + O2 --> 2MgO If the mass of the magnesium increases by 0.335 g, how many grams of magnesium reacted? A. 0.882 B. 0.441 C. 0.509 D. 1.02 E. Not
  3. chem

    Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium nitride reacts with water to give ammonia. Mg3N2(s) + 6 H2O(l) → 3 Mg(OH)2(s) + 2 NH3(g) What volume of ammonia gas at 24°C and
  4. chemistry

    Magnesium combines with oxygen to form magnesium oxide. If 20.07 g of magnesium reacts completely with 6.70 g of oxygen, what is the percent by mass of oxygen in magnesium oxide?
  5. Chemistry Lab MgO

    If in Part B.2, the burning of the magnesium is uncontrolled (burns brightly), how will this procedural error affect the reported mass of: a Magnesium in the magnesium oxide? Explain. B. oxygen in the magnesium oxide? Explain.
  6. Chemistry

    Magnesium forms both an oxide and a nitride when burned in air. Discuss the formation of magnesium oxide and magnesium nitride when magnesium atoms react with oxygen and nitrogen atoms.
  7. Stiochiometry

    Equation 2Mg+O2= 2MgO Lab data: Magnesium ribbon= .04 grams Magnesium Oxide= .09 2. Using the initial mass of magnesium, calculate the moles of oxygen and then moles of magnesium oxide produced. What is the mole ratio of the
  8. Chemistry

    a 6 g sample of magnesium was burned in a crucible producing 10 g of magnesium oxide. What mass of oxygen reacted with magnesium to form the 10 g of magnesium oxide?
  9. Chemistry

    Magnesium reacts with oxygen to form magnesium oxide according to the following equation: 2Mg(s) + O2(g) ==> 2MGO(s) If 0.81 grams of magnesium oxide are formed, how many grams of oxygen reacted?
  10. science

    Write balanced chemical equations (using symbols) for the following reactions 1.hydrochloric acid reacts with magnesium to form magnesium chloride and hydrogen 2.Nitrogen monoxide burns in oxygen to form nitrogen dioxide

More Similar Questions