Homework Help: Chemistry

Posted by katie on Friday, February 29, 2008 at 4:13pm.

Use the equation below to answer the following questions.

Al + H2SO4 ==> Al2(SO4)3 + H2

A. If 8.15 moles of aluminum are reacted, how many moles of hydrogen will be produced?

B. If 44.7 g of hydrogen sulfate is reacted, what mass of aluminum sulfate is produced?

C. If 34.6 g of hydrogen sulfate is reacted, how many moles of aluminum is also reacted?

D. What mass of aluminum is needed to produce 0.321 moles of hydrogen?

Chemistry - DrBob222, Friday, February 29, 2008 at 5:14pm
You need to balance the equation.
2Al + 3H2SO4 ==> Al2(SO4)3 + 3H2

Now use the coefficients to convert mols Al to mols H2.
mols H2 = mols Al x (3 mols H2/2 mols Al) = ??
Note how the mols Al cancel to leave mols H2. That is how you know if the conversion factor you are using is the right one (instead of using 2 mols Al/3 mols H2.

Answer this Question

Related Questions

Chemistry - How many grams of aluminum sulfate, Al2( SO4)3 , will be formed from...
chemistry - Al(s) + H2SO4(aq)-> Al2(SO4)3(aq) + H2(g) Consider the ...
chemistry urgent - given the reaction: 2 Al + 3 H2SO4 -> Al2(SO4)3 + 3 H2...
Chemistry - Calculate the volume (in mL) of 9.0M H2SO4 that you would need to ...
chemistry - Aluminum reacts with sulfuric acid, which is the acid in car ...
chemistry - Use the balanced equation below to answer the following questions. ...
Chemistry - If 20.0 grams of Al is placed into a solution containing 115 grams ...
Chemistry - Alumminum hydroxide reacts with sulfuric acid as follows: 2Al(OH)3+...
chemistry - consider the reaction, 2Al(OH)3+3H2SO4---->Al2(SO4)3+6H2O a. ...
Chemistry - For the given reaction, how many moles of water will be formed ...

For Further Reading

First Name:
School Subject:
Answer: