Tuesday

March 31, 2015

March 31, 2015

Posted by **hanan** on Tuesday, July 24, 2012 at 11:13pm.

of beryllium dust. How many atoms of beryllium are

present in a room with dimensions of 8 feet by

13.6 feet by 15.6 feet?

Answer in units of atoms

- science -
**drwls**, Wednesday, July 25, 2012 at 8:17amCompute the room volume in ft^3 and convert it to cubic meters.

8*13.6*15.6 = 1797 ft^3 = 50.9 m^3

With 32.7*10^-6 g per m^3, there are 1.66*10^-3 gram of Be dust in the room.

Convert that to moles using the atomic weight of Be (9.0 g/mol), and then use Avogadro's number for the number of atoms.

**Answer this Question**

**Related Questions**

Chemistry - A sample of air contains 21.9ìg/m3 of beryllium dust. How many atoms...

AP Chemistry - A sample of air contains 12.8 µg/m3 of beryllium dust. How many ...

chem - A sample of air contains 14.5 µg/m3 of beryllium dust. How many atoms of ...

ap - A sample of air contains 38.5 ìg/m3 of beryl- lium dust. How many atoms of ...

math - he dimensions of Liz's desk are 3.2 feet wide and 4.6 feet long. Match ...

Geometry - the walls, floor, and ceiling of a room form a rectangular solid. The...

math - a storage room measures 11.35 feet in length by 9.5 feet in width by 8.3 ...

math - A storage room measures 14.25 feet in length by 12.5 feet in width by 8.4...

math - Sam is going to tile a rectangular room that has an area of 64 square ...

Math 6 scale math - A model of a rail road station has a scale of 1 inch equals ...