chemistry

posted by .

sodium reacts completely with 0.142kg of chlorine, forming 234g of sodium chloride. What mass of sodium reacted?

I know that for chemical changes the amounts should end up being equal, but I don't know how to set up the problem.

  • chemistry -

    It is the number of atoms, or moles, of Na which is equal to the number of atoms, or moles, of Cl in NaCl
    Na = 23 grams/mol
    Cl = 35.5 grams/mol

    NaCl = 58.5 grams/mol

    so if we ended up with 234 grams ofNaCl, that was 4 mols of NaCl

    That requires 4*23 = 92 grams of Na
    and
    That requires 4*35.5 = 142 grams of Cl, sure enough

  • chemistry -

    92.0

  • chemistry -

    92 is the correct answer.

  • chemistry -

    124

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. science

    Are the following data sets on chemical changes consistent with the law of conservation of mass?
  2. chemistry

    If 9.20 g of sodium metal reacts with chlorine gas to make sodium chloride, how mnay grams of chlorine are required to react completely with the sodium?
  3. chemistry

    Sodium (Na) metal undergoes a chemical reaction with chlorine (Cl) gas to yield sodium Cl, or common table salt. If 1.00 g of sodium reacts with 1.54 g of chlorine, 2.54 g of sodium chloride is formed and 17.9 kJ of heat is released. …
  4. chemistry

    when chlorine gas is bubbled into a solution of sodium bromide, the sodium bromide reacts to give bromine a red brown liquid and sodium chlorine. A solution was made by dissolving 20.0g of sodium bromide in 100.0 g of water. After …
  5. chemistry

    when chlorine gas is bubbled into a solution of sodium bromide, the sodium bromide reacts to give bromine a red brown liquid and sodium chlorine. A solution was made by dissolving 20.0g of sodium bromide in 100.0 g of water. After …
  6. chemistry

    A sample of sodium reacts completely with 0.568 of chlorine, forming 936 of sodium chloride. What mass of sodium reacted?
  7. chemistry

    When 3.00 moles of sodium are reacted with large amounts of chlorine gas 145.8 g of sodium chloride are produced determine percentage yield
  8. Chemistry

    A sample of sodium reacts completely with 142 g of chlorine, forming 234 g of sodium chloride. What mass of sodium reacted?
  9. Chemistry. Plz Help!

    A sample of sodium reacts completely with 142 g of chlorine, forming 234 g of sodium chloride. What mass of sodium reacted?
  10. Chemistry. I got the wrong answer. Plz help

    A sample of sodium reacts completely with 142 g of chlorine, forming 234 g of sodium chloride. What mass of sodium reacted?

More Similar Questions