Need help on chemistry, solution problems.

Tetsusaiga · Probably a bot. Joined: 21 Sep 2006 Posts: 1

Hello, the question i have here is:

Fifty millilitres of a 0.05M solution of Sodium Carbonate is added to 80mL of a 5% by mass solution containing Siliver Nitrate. The product of the reaction are solid Siliver Carbonate and a solution is evapourated to dryness, leaving a mixture of salts. How many grams of the salts, Sodium Carbonate, Siliver Nitrate, Siliver Carbonate, and Sodium Nitrate are present in the salt mixture?

Note: Indicate any assumptions necessary in order to perform the calculations.

The balanced chemical equation is Na2CO3 + 2AgNO3 = Ag2CO3 + 2NaNO3

Na2CO3 = 106g/mol
AgNO3 = 169.87g/mol
Ag2CO3 = 275.74g/mol
NaNO3 = 85.00g/mol

i found out the moles of Sodium Carbonate to be 0.0025 mol.

Then i'm stuck, thanks everyone.

yhtu22 · Posted: Fri Sep 22, 2006 2:44 am Post subject:

Assuming the mols of sodium carbonate you found to be correct, wouldn't you just have to relate that amount to the others using the balanced equation? Multiply by the proper coefficient to find the mols of each substance, then use dimentional analysis...i.e. the g/mol of each substance to find the grams of each substance.