What mass of Carbon Monoxide in grams is present in a room measuring....

Chemistry
Tutor: None Selected Time limit: 1 Day

The concentration of carbon monoxide in an urban apartment is 49 µg/m3. What mass of carbon monoxide in grams is present in a room measuring 8 ✕ 12 ✕ 22 ft? (Enter your answer to three digits.) 

Jun 10th, 2015

Thank you for the opportunity to help you with your question!

1 ft=0.3048m

total volume in m^3=8*12*22*0.3048*0.3048*0.3048

=59.80m^3

=so total CO mass=49*10^-6*59.8

=2.93*10^-3 g

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 11th, 2015

Isnt 49 micrograms equal to 49*10^-5 and not 49*10^-6?

Jun 11th, 2015

micro =10^-6

so 49micro grams=49*10^-6 grams

Jun 11th, 2015

if you are still not sure please check with 

  1. Micro (symbol µ) is a unit prefix in the metric system denoting a factor of 106 (one millionth). Confirmed in 1960, the prefix comes from the Greek μικρός (mikrós), meaning "small". The symbol for the prefix comes from the Greek letter μ (mu).


Jun 11th, 2015

Oh ok, how do i express my answer in 3 digits?


Jun 11th, 2015

2.93*10^-3 g

they ask answer in grams so this is the only way to write it

Jun 11th, 2015

Thanks!


Jun 11th, 2015

you are always welcome!


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Jun 11th, 2015

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