chem

Determine the mass of oxygen in a 7.2-g sample of Al2(SO4)3

  1. 👍 0
  2. 👎 0
  3. 👁 356
asked by dave
  1. mols Al2(SO4)3 = grams/molar mass = ?
    There are 12 O atoms per 1 mol Al2(SO4)3 so there are 12 x mols Al2(SO4)3 there.

    Convert mols O to grams O. g = mols x 16 = ?

    I assume the question means grams O (atoms) and not O2 (molecules).

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemestiry

    Al2(SO4)3(aq) + BaCl2(aq) BaSO4(s) + AlCl3(aq) Consider the unbalanced equation above. A 0.680 g sample of impure Al2(SO4)3 reacts with excess BaCl2. If the sample produces 0.530 g of BaSO4, what is the mass percent of Al2(SO4)3

    asked by edi on March 20, 2013
  2. chemestiry

    Al2(SO4)3(aq) + BaCl2(aq) BaSO4(s) + AlCl3(aq) Consider the unbalanced equation above. A 0.680 g sample of impure Al2(SO4)3 reacts with excess BaCl2. If the sample produces 0.530 g of BaSO4, what is the mass percent of Al2(SO4)3

    asked by edi on March 20, 2013
  3. chemestiry

    Al2(SO4)3(aq) + BaCl2(aq) BaSO4(s) + AlCl3(aq) Consider the unbalanced equation above. A 0.680 g sample of impure Al2(SO4)3 reacts with excess BaCl2. If the sample produces 0.530 g of BaSO4, what is the mass percent of Al2(SO4)3

    asked by edi on March 20, 2013
  4. Chemistry

    A 0.670 g sample of impure Al2(SO4)3 reacts with excess BaCl2. If the sample produces 0.760 g of BaSO4, what is the mass percent of Al2(SO4)3 in the sample?

    asked by Tevin on February 23, 2014
  5. chemisty

    A mixture contains only NaCl and Al2(SO4)3. A 1.76-g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the

    asked by hope on February 5, 2011
  6. chemisty

    A mixture contains only NaCl and Al2(SO4)3. A 1.76-g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the

    asked by hope on February 5, 2011
  7. Chemistry

    A mixture contains only NaCl and Al2(SO4)3. A 1.45-g sample of the mixture is dissolved in water and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the

    asked by Melissa on September 18, 2010
  8. chemistry

    A sample of aluminum sulfate 18-hydrate, Al2(SO4)3 · 18 H2O, containing 157.0 mg is dissolved in 1.000 L of solution. Calculate (a) molarity of Al2(SO4)3 (b) molarity of SO42- (c) molality of Al2(SO4)3, assuming that the density

    asked by Corinthia on September 20, 2011
  9. chemistry

    Hi, the question is: in each reaction, identify what have been oxidised and reduced. The equation is: 2Al + 3H2SO4 ---> Al2(SO4)3 + 3H2 I am confused about the Al2(SO4)3 I know what oxides and reductions us I just don't understant

    asked by Franky on October 6, 2011
  10. science

    When a 2.00 g sample of Al2(SO4)3·xH2O is heated to remove all water, a mass of 1.03 g remains. Determine the value of x.

    asked by tim on September 17, 2015

More Similar Questions