Posted by **Cheyenne** on Thursday, September 23, 2010 at 8:46pm.

A sample of air contains 21.9ìg/m3 of beryllium dust. How many atoms of beryllium are present in a room with dimensions of 8 feet by 12.3 feet by 18.3 feet? Answer in units of atoms.

- Chemistry -
**DrBob222**, Thursday, September 23, 2010 at 9:14pm
I would change feet to meters for all three dimensions, then L x W x H of the room (in meters) will give you the volume in cubic meters. volume x concn Be dust (the 21.9 something g/m^3) will give you grams Be dust. Divide by atomic mass to arrive at moles, then remember there are 6.022 x 10^23 atoms in a mole.

## Answer this Question

## Related Questions

- AP Chemistry - A sample of air contains 12.8 µg/m3 of beryllium dust. How many ...
- science - A sample of air contains 32.7 µg/m3 of beryllium dust. How many atoms ...
- 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 ...
- Geometry - the walls, floor, and ceiling of a room form a rectangular solid. The...
- math - he dimensions of Liz's desk are 3.2 feet wide and 4.6 feet long. Match ...
- 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 ...

More Related Questions