Posted by **Nicole** on Monday, October 3, 2011 at 10:18pm.

Your bedroom is 18 ft long and 15 ft wide, and the distance from floor to ceiling is 8 ft 6 in. You need to know the volume of the room in metric units for some scientific calculations.

(a). What is the roomâ€™s volume in cubic meters?

(b). What is the mass of air in the room in kilograms? (Assume density of air is 1.2 g/ L and the room is empty of furniture.)

- Chemistry -
**DrBob222**, Monday, October 3, 2011 at 10:56pm
ft x 12"/ft x 2.54 cm/in x 1m/100cm = ?meters

Convert 18ft, 15 ft, an 8.5ft to meters, then volume = length x width x height. That will give you #1.

For #2, convert cubic meters to liters (I would go from cubic meters to cc, then to L), then volume x density = mass in grams.

- Chemistry -
**Nicole**, Monday, October 3, 2011 at 11:12pm
ok quick question i got the lxwxh and then that would be # 1 .. for i take the answers from one and convert them to liters.. ?/

- Chemistry -
**DrBob222**, Monday, October 3, 2011 at 11:15pm
There are 100 cm in 1 m; therefore,

?cubic meters x (1m/100 cm)^3 = x cc.

Then convert x cc to liters (you remember 1000 cc = 1L)

- Chemistry -
**Nicole**, Monday, October 3, 2011 at 11:16pm
ok so a was 84.9 vol .. so i take that and then.. i then take the m and convert them to kil.. then do the vxd=m

- Chemistry -
**Nicole**, Monday, October 3, 2011 at 11:28pm
ok for 2 i did m= 1.2g/l /84.9= .0141 then moved dec. 3 places which made it 14.1 kg is that right or close..

- Chemistry -
**DrBob222**, Monday, October 3, 2011 at 11:41pm
No, for two reasons.

#1. I think the volume is closer to 65 m^3 so you need to rethink that part.

#2. I screwed up on the conversion of m^3 to cc.

m^3 x (100cm/1m) x (100 cm/1m) x (100 cm/1m) = x cc. Divide that by 1000 to convert to L. I think the answer is close to 65,000 L.

65,000 L x 1.2 g/L = ?grams and grams/1000 = kg. My final answer is about 78 kg.

## Answer This Question

## Related Questions

- math - Assume that aclass room is arectangular box where the floor is 8metres ...
- Math - Jack is going to paint the ceiling and 4 walls of a room that is 10ft ...
- geometry - a room is 18 feet long,15 feet wide and has an 8 foot ceiling.a cord ...
- chemistry - a room is 18ft long, 15ft wide and from floor to ceiling is ...
- Maths - Find the sum of the area of the ceiling and the floor of a room of 5m ...
- physics - A 1.70 kg ball is attached to a ceiling by a 1.50 m long string. The ...
- Math - a room is 18 ft long, 14 ft wide, and 8 ft high then how would you find ...
- physics - A 2.41 kg ball is attached to a ceiling by a 1.86 m long string. The ...
- Metric System - I have two queations that have to do with the metric system: 1- ...
- Geometry - 1. A point on the ceiling of a room is 12ft. from each of the ...

More Related Questions