Chemistry

posted by .

Lithium nitride reacts with water to form ammonia and aqueous lithium hydroxide.

Li3N(s) + 3H2O(l) ==> NH3(g) + 3LiOH(aq)

a)What mass of water is needed to react with 32.9g Li3N?
b)When the above reaction takes place, how many molecules of NH3 are produced?
c)Calculate the number of grams of Li3N that must be added to an excess of water to produce 15.0L NH3(at STP).

  • Chemistry -

    1. Write and balance the equation. You have that.

    a. Convert 32.9 g Li3N to moles. moles = grams/molar mass.
    Using the coefficients in the balanced equation, convert moles Li3N to moles H2O.
    Then convert moles H2O to grams. g = moles x molar mass.

    b. To obtain moles NH3, use the same process as in part a. Then remember that 1 mole of any material contains 6.022 x 10^23 molecules.

    c. Same procedure as in a except convert 15.0 L NH3 at STP (remember 1 mole of a gas occupies 22.4 L at STP) to moles, convert moles NH3 to moles Li3N, then grams = moles x molar mass.

    Post your work if you get stuck.

  • Chemistry -

    For a I have .948 mol Li3N and for h20 I have 17.07848544 grams so now what do I do

  • Chemistry -

    I got answers for a and b but I don't know where to begin on c

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Lithium hydroxide is used in the space program to remove carbon dioxide (from respiration) in spacecraft. Specifically, lithium hydroxide, LiOH, reacts with carbon dioxide, CO2, to form lithium carbonate, Li2CO3, and water. 2 LiOH …
  2. chemistry.

    Lithium hydroxide reacts with carbon dioxide as follow. 2LiOH + CO2________ Li2CO3 + H2O What mass (in grams) of Lithium hydroxide is need to react with 11 g of carbon dioxide?
  3. chemical equations

    Lithium nitride reacts with water to form ammonia and aqueous lithium hydroxide. Li3N(s) + 3H2O(l) > NH3(g) + 3LiOH(aq) What mass of water is needed to react with 32.9 g Li3N?
  4. Chemistry

    When heated, lithium reacts with nitrogen to form lithium nitride: 6Li+N2 --> 2Li3N What is the theoretical yield of Li3N in grams when 12.4 g of Li is heated with 33.9g of N2
  5. chemistry

    Lithium metal dissolves in water to yield hydrogen gas and aqueous lithium hydroxide. What is the final concentration of hydroxide ions when 5.500 g of lithium metal is dropped into 750. mL of water?
  6. chemistry

    is the equation of lithium : lithium+water-lithium hydroxide?
  7. Chemistry

    1. The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrofluoric acid. F2(g) + NH3(g) „³ N2F4(g) + HF(g) a. If you have 66.5g NH3, how many grams of F2 are required for complete reaction?
  8. Chemistry

    Lithium hydroxide is used in the space program to remove carbon dioxide (frin respiration) in spacecraft. Specifically, lithium hydroxide, LiOH reacts with carbon dioxide, CO2 to form lithium carbonate Li2Co3, and water. 2 liOH + Co2 …
  9. Chemistry

    Lithium hydroxide is used in the space program to remove carbon dioxide (from respiration) in spacecraft. Specifically, lithium hydroxide, LiOH, reacts with carbon dioxide, CO2, ro form lithium carbonate, Li2CO3, and water. 2LiOH+CO2->Li2CO3+H2O, …
  10. Chemistry

    Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. How many grams of magnesium would …

More Similar Questions