chemistry

how many grams of calcium oxide are needed to produce 36.0 g of Hg.

4HgS +4CaO--> 4Hg +3CaS + CaSO4.

  1. 👍
  2. 👎
  3. 👁
  1. 1 mole of CaO = 40.08 + 16.00 = 56.08g/mol
    1 mol Hg = 200.6 g/mol

    (a) Convert 36.0 gHg to moles:
    (36.0gHg)/200.6gHg/molHg = 0.1795 mol Hg

    (b) It takes 4 mol CaO to produce 4 moles Hg, so....
    (0.1795 mol Hg)(4 mol CaO / 4 mol Hg) = 0.1795 mol CaO

    (c) Convert 0.1795 mol CaO to grams of CaO by multiplying the moles of CaO by 56.08g CaO/mol CaO to get grams of CaO.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    the recommended daily allowance of calcium is 1.2 g. calcium carbonate contains 12.0 % calcium by mass. how many grams of calcium carbonate are needed to provide the rda of calcium

  2. CHEM MOLES !@@!

    Mole Calculation Worksheet 1) How many moles are in 15 grams of lithium? 2) How many grams are in 2.4 moles of sulfur? 3) How many moles are in 22 grams of argon? 4) How many grams are in 88.1 moles of magnesium? 5) How many moles

  3. chemistry

    Determine the ratio of cations to anions for the following ionic compounds a. potassium, a salt substance b. calcium floride, used in steel industry c. aluminum oxide, known as corundum in the crystalline form d. calcium oxide,

  4. chemistry

    How many grams of calcium carbonate are required to prepare 50.0 grams of calcium oxide? CaCO3-> CaO + CO2

  1. Chemistry 1201

    When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction CaCO3(s)->CaO(s)+CO2(g) What is the mass of calcium carbonate needed to produce 53 L of carbon dioxide at STP?

  2. chemistry

    Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of

  3. chemistry

    How many grams of calcium oxide, CaO, can be produced from 4.20 g of calcium metal and 1.60 g of oxygen gas?

  4. chemistry

    Calcium carbonate reacts with phosphoric acid to produce calcium phosphate, carbon dioxide, and water. 3 CaCO3(s) + 2 H3PO4(aq) Ca3(PO4)2(aq) + 3 CO2(g) + 3 H2O(l) How many grams of phosphoric acid react with excess calcium

  1. chemistry

    In the following reaction, how many grams of ferrous sulfide (FeS) will produce 0.56 grams of iron (III) oxide (Fe2O3)? 4FeS + 7O2 d 2Fe2O3 + 4SO2 The molar mass of ferrous sulfide is 87.92 grams and that of iron (III) oxide is

  2. chemistry

    2.241 g sample of nickel combines with oxygen to produce 2.852 g of metal oxide. Calculate the number of grams of xygen in the metal oxide.

  3. Chemistry

    calcium carbonate decomposes if heated to form calcium oxide and carbon dioxide. if 24.5 grams of calcium carbonate decompose how many moles of calcium carbonate reacted?

  4. Chemistry

    How many grams of calcium carbonate are required to prepare for 50.0 grams of calcium oxide

You can view more similar questions or ask a new question.