Posted by **Mom** on Sunday, October 9, 2011 at 2:35pm.

A piece of metal alloy (a solution of metals) is made of gold and silver. It is 20% by mass silver. An irregularly shaped piece of this alloy contains 0.356 lb of gold. When the alloy is added to a graduated cylinder that contains 31.55 mL of alcohol, the level in the cylinder rises to 48.77 mL. If alcohol has a density of 0.890 g/cm³, what is the density of the alloy?

- Chemistry -
**bobpursley**, Sunday, October 9, 2011 at 2:46pm
convert the lbs of gold to grams. That represents eighty percent of the mass of the alloy sample, so the mass of the sample is massgold/.8

you know the volume of the sample(differences in the volumes of alcohol when submerged).

density alloy= massalloy/volume

Notice the density of the alcohol is given. That is a red herring.

## Answer this Question

## Related Questions

- Chemistry - A homogenous mixture of metals is called an alloy. An alloy is found...
- Math - The amounts by weight of gold, silver and lead in three alloys of these ...
- chemistry - Archimedes used density along with mass and volume of alloys (...
- algebra - a jeweler purchased 5 oz of a gold alloy and 20 oz of a silver alloy ...
- algebra - A chemist has x grams of an alloy that is 20% silver and 10% gold, and...
- physics - a piece of gold aluminuim alloy weighs 100g in air and 80g in water....
- Chemistry - A silver-copper alloy had a mass of 0.1264g. When the alloy was ...
- algebra - Joe has a ring weighing 15 grams made of an alloy of 20 silver and the...
- Physics(class) /Math (problem) - Joe has a ring weighing 16 grams made of an ...
- AP Chem - A silver-copper alloy had a mass of 0.1264g. When the alloy was ...

More Related Questions