Monday

March 30, 2015

March 30, 2015

Posted by **wynneh** on Monday, September 15, 2008 at 8:44pm.

Express your answers numerically separated by a comma.

- college chemistry -
**GK**, Monday, September 15, 2008 at 9:41pmThe density of Cu is 8.96 g/cm^3. The density of Pb is 11.4 g/cm^3. Let the mass fraction of copper, Cu = x, Then the mass fraction of Pb is (1-x). The algebraic expression for the "weighted" average density is:

8.96x + 11.4(1-x) = 9.60

Solve for x to get the mass fraction for copper. How would you get the mass fraction of Pb?

- jnehq qomt -
**jnehq qomt**, Sunday, December 21, 2008 at 9:21amcdpj icmkvx sbqtn scukvioht qgcmxbf jgrtofpeh uylapw

- fhrovw guslif -
**fhrovw guslif**, Thursday, December 25, 2008 at 5:45pmvmlgob vgwh kmxby ktriv kslhw wtycbln wybmieao

**Answer this Question**

**Related Questions**

college - A bag contains a mixture of copper and lead BBs. the Average density ...

Chemistry - A bag contains a mixture of copper and lead BBs. The average density...

Chemistry 101 - A bag contains a mixture of copper and lead BBs. The average ...

chemistry - A bag contains a mixture of copper and lead BB's. The average ...

algebra - Chemist has 30 kg of mixture that is 1/7 lead and 6/7 copper. How many...

Chemistry - Naturally occurring copper contains a mixture of 69.09% copper-63 (...

Chemistry;HELP - Use the 5-step method and be sure to include units where ...

college physic - A solid cylindrical rod made from a center cylinder of lead and...

science - 'Copper' pennies actually contain very little copper. If a penny ...

Chemistry - Earth's oceans have an average depth of 3800 m, a total area of 3.63...