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Does land cover more than one-half of the earth?
No, less than half, about 25%
Does a 25 ounce rock weigh more than 2 pounds of paper?
No, 25 ounces is less than 2 lbs, it does not matter if it is a rock or paper, 25 ounces will always be less
Why does carbon dioxide get so much attention?
Examinations of Antarctic ice cores reveals atmospheric concentrations of CO2 have varied from 250 ppm to 290 ppm over the past eight hundred thousand (800,000) years. The natural rate of change was typically about 5 ppm per thousand years, between these two extremes. Beginning in the year 1700, atmospheric CO2 concentrations rose rapidly from 280 ppm to 290 ppm. This was some ten times faster than at any time in the previous 800,000 years, though still not any real cause for alarm. At that rate it would have taken centuries more to pass 350 ppm, which many scientists consider a possible maximum sustainable level. From 1900 to 1950 CO2 levels rose another 10 ppm, to 300. Now instead of ten times faster than any natural rate of change, CO2 was climbing 40 times its natural fluctuation rate. From 1950 to 1960 it rose 15 ppm, climbing at 133 times the natural rate. Between 1970 and 1975 it rose from 325 to 330 ppm, accelerating to 200 times the natural rate of fluctuation. We passed 350 ppm in 1988, and we are now close to 400 ppm. Before 2050 we will pass 500 ppm. The concern is that earth's natural carbon sinks cannot cope with this rapid change, and that the increase will drive up the temperature. Earth's permafrost also contains billions of tons of CO2 and methane (CH4). Methane is about 25 times as potent a greenhouse gas as CO2 is. As the permafrost melts, the release of this gas is expected to create a feedback loop further accelerating earth's warming. The consequences of global warming are only barely being realized now, with slightly increased storm energy and slightly greater incidence of coastal flooding. As sea levels gradually rise from melting glacial water, these effects are expected to become more pronounced. There is enough ice in Greenland to raise ocean levels close to 20 feet.
What is the difference between ppm and mgl?
mgl is milligrams per liter. For example if you had a water sample with ammonia as 25 mgl then there would be 25 milligrams of ammonia for each liter of water. If, on the other hand, the water sample showed 45 ppm of ammonia then there would be 45 parts of some quantity per one million units of the same quantity. This could be 45 gallons of ammonia peer one million gallons of water or 45 ounces of ammonia per one million ounces of water or 45 teaspoons of ammonia for each one million teaspoons of water and so on.Answer:Although the numerical value of 1 mg/L amd 1 ppm are the same (1 mg/L= 1mg/1kg=1 mg/1,000,000 mg where 1kg is the weight of 1 liter of water at 4oC) the ppm vallue is usually eserved for gases in other gases as 1 ppm by volume is also equivalent 1 ppm by molar measure.
How far should a land fill site where methane gas and carbon monoxide is present be from a residential area?
That is difficult to answer, as it always depends on the concentrations. Since both methane and carbon monoxide are gases it is unlikely that the will linger for long on the land fill site.Here some guidelines towards measured concentration and their acceptability:COOccupational exposure limitsTLV: 25 ppm as TWA BEI issued (ACGIH 2006).MAK: 30 ppm 35 mg/m³ Peak limitation category: II(1); Pregnancy risk group: B; (DFG 2006).CH4TLV: (aliphatic hydrocarbons gases, Alkane C1-C4) 1000 ppm (as TWA) (ACGIH 2005).MAK not established.The more dangerous of the two is clearly CO (carbon monoxide). CH4 is lighter than air and will proceed straight up to the sky.
How can you convert 0.0025 percent to ppm?
Multiply by 10,000: 0.0025 x 10,000 = 25 ppm
What is 25 percent more than 52?
25% more than 52 is 65.
What is 25 more than -45?
25 more than -45 = -20
How much bleach to use for storing water?
25 PPM then flushed out properly
What 25 percent more than 52?
65 is 25% more than 52.
What is 25 more than 50?
50 is more than 25. If you mean 25 +50... it adds to 75
What are the recommended alarm levels for ammonia gas detection?
A warning alarm is usually set at 25 ppm. The main alarm is usually set at 50 ppm.
Which one is a massive a 25 kilogram or 50 kilogram?
50 is bigger than 25 so 50 kg is more massive than 25 kg!50 is bigger than 25 so 50 kg is more massive than 25 kg!50 is bigger than 25 so 50 kg is more massive than 25 kg!50 is bigger than 25 so 50 kg is more massive than 25 kg!
Is 25 more or less than 25 percent?
More.
How do you convert Percent into Part per million?
Multiply the percent by 10,000: Example: 25% = 25 x 10,000 = 250,000 ppm
Is 25min and 36 sec more than 25 minutes?
25 minutes and 36 seconds is 36 seconds more than 25 minutes.
What number is greater than 25 that has more factors than 192123 and 25?
840
