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An average adult breathes about 0.5 L of air per breath at rest. Normal air contains ~ 0.03 % of CO2 which gets enriched to 4 % of exhaled air. The difference, 3.97 % is what you exhaled. One mole of air at room temperature have a volume of ~22.4 L (use ideal gas equation p*V=n*R*T, p=pressure [bar], V=volume, n=amount in mole, R=ideal gas constant, T=temperature [Kelvin]). 1 mole CO2 is equivalent to 44 g.
So, 0.5 L*(1 mole /22.4 L)*(44 g / mole) = 0.982 g
One breath therefore contains ~ 1 g of exhaled CO2
Note: Some of the gases are not ideal (mostly CO2), the volume of one breath depends on the person (sex, age, fitness, size) and the activity. It can be up to 2 L at least. But it is just an approximation anyways.
Btw - 1 kWh of electricity cost about 600 g of CO2. An average light bulb of 60 W therefore gives rise to the production of 10 g CO2 / s during use (not counting its production or disposal).
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If one breath is 4% CO2 and 1 breath is 0.5 liter, Mass of CO2 = 0.04*0.5 L* (1/22.4) mol/liter* 44 g/mol * (273 K/310 K) = 0.035 g/breath, not 1 g/breath. Body temp is 37 oC = 310 K, but that's a minor point.
If 1kWh results in 600 g of CO2, 60 Watts leads to 60W*600 g/kWH *(1/3600) h/sec *(1/1000) kw/W= .01 grams/second of CO2 not 10 g/sec. Otherwise people may feel guilty about breathing.
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some serious problems with the decimal place in the original answer. atmospheric content co2 is roughly 350 PPM or .00035, less than the original answer by several orders of magnitude. maybe that's why all the histeria about global warming, smoking in the boys room during middle school math....
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How much does CO2 weigh?
Carbon dioxide has a molar mass of 44.0095 grams per mole. This means that one molecule of CO2 will have a mass of 7.308 E(-23) grams.
How many heart bets per min do hedgehogs breath?
304 bpm
What is tidal lung capacity?
Tidal capacity is the amount of oxygen the lungs can breathe in and out per breath
How much does glass cost per square foot?
how much does 3/8 clear annealed glass cost per square foot wholesale
How much does the slingshot at oxygen cost?
€20 per person so €40 per go
How much Co2 is emitted by horses?
No Co2 is emitted by horses themselves.----------------------------------------------------------------------Apart from when they breathe of course.
How much CO2 does a train emmit?
18 & 1/2 tons per second. All in all there's about 2875640 Billion tons of co2 emitted everyday.
How much CO2 does a motorbike produces every km?
Doesn't the driver ( and any passengers ) in the car emit CO2 as well, so you are not comparing like with like.You must compare CO2 from Car, driver and passengers with CO2 emitted by cyclist to be more accurate.You will need to divide the CO2 for car driver and passenger by number of occupants of car to get CO2 per person per journey
How much co2 is put into the air when you light a campfire?
The amount of CO2 emitted from a campfire can vary based on factors like the size of the fire, the type of fuel used, and the duration of burning. On average, a small campfire can release about 2 kilograms of CO2 per hour, but this can increase significantly for larger fires or longer burning times.
How many tons of CO2 for 1MW of energy?
The amount of CO2 emitted per 1 MW of energy generated depends on the source of the energy. On average, coal power plants emit about 1 ton of CO2 per 1 MWh, while natural gas power plants emit about 0.5 tons of CO2 per 1 MWh. Renewable energy sources like wind and solar do not emit any CO2 during electricity generation.
How much CO2 does Japan emit per year?
Too much !
How to calculate fuel efficiency from co2 emission?
To calculate fuel efficiency from CO2 emissions, you need to know the amount of CO2 emitted per unit of fuel burned. This information can be found in emissions data provided by regulatory agencies or fuel suppliers. Once you have this data, you can calculate fuel efficiency by dividing the amount of CO2 emitted by the fuel by the distance traveled or work done. Keep in mind that this calculation provides an indirect measure of fuel efficiency and assumes that the fuel burned was solely responsible for the CO2 emissions.
How much co2 does a hummer produces in a year?
A Hummer parked in a garage emits almost zero CO2 over the course of a year. The Hummer H2 gets around 10 to 12 mpg. Assuming the typical owner drives 15,000 miles per year, that is around 1300 gallons of gas. Each gallon of gas burned results in 14 pounds of CO2. Multiplying these last two figures we get 9.5 tons of CO2 emitted per year, per Hummer, on average.
How does an automobile using 11.5 barrels of oil create 5 tons of carbon dioxide?
To obtain the number of grams of CO2 emitted per gallon of gasoline combusted, the heat content of the fuel per gallon is multiplied by the kg CO2 per heat content of the fuel. The average heat content per gallon of gasoline is 0.125 mmbtu/gallon and the average emissions per heat content of gasoline is 71.35 kg CO2/mmbtu.
How much co2 was emitted from coal plants in 2010?
A power plant burning coal will emit almost 3 tonnes of carbon dioxide for every tonne of coal burned. Coal fired power plants are found all around the world. Data will be examined for US power plants. There are 492 coal-fired power plants in the U.S., with an average size of 667 megawatts (MW). The 2009 USEPA estimate of CO2 emissions is 1,329 lbs CO2 per megawatt-hour. This puts the total CO2 emission at about 1,900 million metric tonnes of CO2 a year.
If you breathe out 1.01 moles of CO2 in a week what would be the mass of CO2 that you would have breatheed out in grams?
1 Mol of CO2 is 44g, so 1.01Mol*44(g/mol) = 44.44g However, the average human breath contains roughly 1g of CO2 per breath (assuming 0.5 L of air inhaled then exhaled) We can assume an average breathing rate of 12 breaths per minute. In 1 week (7 days/168 Hours/10,080 Minutes) we have approximately 120,960 breaths per week, at an average of 1 gram per breath we will have about 120.96 kg in a week or 3.145 metric tons per year, to put that in perspective, your average car produces less in the same time frame assuming you drive a modern small car about 1,000 miles per month. 2,200,000,000,000 tons of CO2 per year if you take just people into account (7 billion)
When you hold your breath your brain sends a message to the diaphragm and rib muscles telling them to breathe . why is this?
The brain uses a CO2 - O2 feedback system. CO2 rises as O2 is depleted. The brain receives signals of rising CO2, and triggers the diaphragm.Incidentally, this system becomes reversed in emphysema and severe lung conditions. The brain becomes accustomed to rising CO2. IF too much O2 is administered externally, it will stop the brain from signalling the next breath. So while a person with healthy lungs can tolerate external O2 at 8 liters per minute, people with emphysema can only tolerate no more than 2 liters per minute---or the person will stop breathing.
