# Chem

posted by .

How many minutes will it take a current of 66.049 Ampères to deposit 86.825 grams of aluminum (26.981538 g/mol)?

Al has a charge of 3, so n=3.
MM=26.981538g/mol

1eq=molarmass/charge
so 26.981538/3=8.9938
1eq=8.9938
1F=96485c/eq
F=13138.29477

Am I on the right path? I don't know where to go from here...

• Chem -

26.98 g Al/3 = 8.994 g = mass deposited by 96,485 coulombs.
To deposit 88.825 g, we must have
?C = 96,485 x 88.825/8.994 = ??

Amperes x seconds = Coulombs.
You have C and you have A, solve for seconds and convert to minutes.

## Similar Questions

1. ### Chem

What equation can I use to solve this kind of problem?
2. ### Chem

How many grams of nickel can be produced by passing a current of 15.0A through aqueous nickel(II) chloride for 80.0 minutes?
3. ### Inorganic chemistry

What charge in coulombs is required to deposit 0.301g Cu(s) from a solution of Cu^2+?
4. ### Inorganic chemistry

One kind of battery used in watches contains mercur(II) oxide. As current flows, the mercury oxide is reduced to mercury. HgO(s) + H2O(l) + 2e^- ==> Hg(l) + 2OH^-(aq) If 2.5x10^-5 amperes flows continuously 1095 days, what mass …
5. ### chemistry

The thermite reaction is a very exothermic reaction; it has been used to produce liquid iron for welding. A mixture of 2 mol of powdered aluminum metal and 1 mol of iron(III) oxide yields liquid iron and solid aluminum oxide. How many …
6. ### ap chem

calculate the lattice enthalpy of potassium fluoride from the following data: enthalpy of formation of K(g): +89 kJ · mol−1 first ionization energy of K(g): +418 kJ · mol−1 enthalpy of formation of F(g): +79 kJ · mol−1 …
7. ### 2 more physics questions I need help on, please?

In which of these situations does more charge flow past a given point on a wire?
8. ### chem

the combustion of 1.83 grams of a compound which only contains C,H, and O yields 4.88 grams of CO2, and 1.83 grams of H2O. What is the empirical formula of this compound?
9. ### chemistry

3CuCl2 *2H2O + 2Al = 3Cu + 2AlCl3 + 6H2O Determine the number of grams that should have been produced when 1.25g of copper (2) chloride dehydrate reacts with excess aluminum so i'm not really sure how you're supposed to calculate the …
10. ### Chemistry

a) A current of 1.50 Amperes passes through a solution of AgNO3 for 3.0 hours. What mass, in grams, of silver collects on the cathode?

More Similar Questions