# Chemistry

posted by .

If 48.1 g of solid Al2S3 and 6.68 mL of liquid H2O are reacted stoichiometrically according to the balanced equation, how many grams of solid Al2S3 remain?

Al2S3(s) + 6H2O(l) → 2Al(OH)3(s) + 3H2S(g)

I found that the limiting reagent,
.6406mol of Al2S3 and .1226mol of H2O
what do I do next

• Chemistry -

You have 48.1/150.161 = 0.3203 mols Al2S3.
You have 6.00g/18.015 = 0.333 moles H2O.

The problem tells you H2O is the limiting reagent so convert moles H2O to moles Al2S3 to see how much will be used.
0.333 x (1 mole Al2S3/6 moles H2O) = 0.333 x (1/6) = 0.0555 moles.

Convert 0.0555 moles Al2S3 used to grams (g = moles x molar mass) and subtract from the 48.1 g to find the amount Al2S3 unreacted.

• Chemistry -

...I got 39.76..I got it wrong..

## Similar Questions

1. ### chemistry

Just checking an answer... I was given Aluminum + Sulfur yields.. & I was to finish & balance & answer the questions. 2Al + 3S => Al2S3 If 1 mole of sulur reacts, how many moles of aluminum sulife are produced?
2. ### Chemistry

If 0.790 mol of solid TiO2 and 8.53 g of solid C are reacted stoichiometrically according to the balanced equation, how many moles of solid TiO2 remain?
3. ### Chemistry

Based on the balanced equation Al2S3 + 6H2O → 2Al(OH)3 + 3H2S calculate the number of excess reagent units remaining when 4 Al2S3 formula units and 30 H2O molecules react?
4. ### Chemistry

If 0.110 mol of liquid H2O and 40.5 g of solid Al2S3 are reacted stoichiometrically according to the balanced equation, how many moles of solid Al(OH)3 are produced?
5. ### Chemistry

If 430 mL of 0.837 M aqueous HNO3 and 23.5 g of solid Al are reacted stoichiometrically according to the balanced equation, how many grams of solid Al remain?
6. ### chemistry

If 48.1 g of solid Al2S3 and 6.68 mL of liquid H2O are reacted stoichiometrically according to the balanced equation, how many grams of solid Al2S3 remain?
7. ### Chemistry

if the yieeld for the following reaction is 85% how many grams of Al2S3 should be used to produce 165 g of Al(OH)3?
8. ### chemistry

Is this equation correctly balanced? If not why. Al2S3+H2O----> Al2S3+3H2O---->Al2(SO)3+3H2
9. ### CHEMISTRY

In each reaction, calculate the moles of product (in parentheses) when 3.00 moles of each reactant is used. A: 4Li+O2 = 2Li2O (Li2O) B: Fe2O3+3H2 = 2Fe+3H2O (Fe) C: Al2S3+6H2O = 2Al(OH)3+3H2S (H2S) Please show work, Thanks
10. ### Chemistry

Al+S=Al2S3 Balanced equ= 2Al+3S=Al2S3 10 grams of Al were mixed with 15 gram of S Find: limiting reagent al or s?

More Similar Questions