Formerly About Advanced Micro Devices Message Board

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Politics : Formerly About Advanced Micro Devices

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next

To: PKRBKR who wrote (932146)	4/26/2016 7:35:05 PM
From: combjelly	Read Replies (1) of 1575396

Given a human outputs so much CO2 I wonder how much of the atmospheric CO2 is due to just human respiration. Why not calculate it? According to here en.wikipedia.org tidal volume is about 0.5 liters for an adult at rest. Breaths per minute is about 16. There are about 526,000 minutes in a year. If about 5% of an exhalation is CO2, that means about 25 milliliters of CO2 per breath. CO2 masses about 44 g/mole. One mole of a gas at STP is 22.4 liters. World population in 2013 was 7.125 billion. To put it in perspective, total world production of coal in 2012 was about 8.6 billion tons. Oxygen masses about 16 grams/mole. Carbon masses about 14 grams/mole. So each ton of coal needs about .57 tons of oxygen to burn it to CO2. There is all you need to calculate how much CO2 is put into the atmosphere per year by human respiration. As a bonus, you have the information to calculate how much CO2 from burning coal alone. Granted, the information won't be exact because it assumes all of the humans are adults and are at rest at all times. Bottom line, no need to make wild guesses or depend on web sites of dubious accuracy. You can calculate the figures on your own. Uh, you do know how to use a calculator?

Report TOU Violation

Share This Post

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next