Leaves absorb sunlight and CO2, and roots absorb water and mineral nutrients. What are the 3 major macronutri?
nitrogen, phosphorus, and potassium
A 368 gram sample of water absorbs infrared radiation at 1.06x10^4 nm from a CO2 laser.?
Suppose all the absorbed radiation is converted to heat. Calculate the number of photons at this wavelength required to raise the temperature of the water by 5.00 degree C. The specific heat capacity of water is 4.184 J/G/degree C.
Why does hot water absorb less carbon dioxide than cold water?
This is actually an interesting question, because the seemingly simple answer turns out to be not so simple when you look closer.So first with the simple answer. The solubility of all gases in all liquids increases when the temperature gets lower*. As some have pointed out, this is due to vapor pressure. This means that the partial pressure of said gas within the liquid will reach equilibrium with partial pressure of said gas in the surrounding atmosphere and said pressure increases with temperature meaning less gas stays in the liquid.However, water is capable of holding much more carbon dioxide than it should based only on vapor pressure. Here is where chemistry comes into play. You see carbon dioxide reacts with water, forming carbonic acid H2CO3 (and the ions thereof: bicarbonate HCO3- and carbonate CO3 2-), which is soluble in water. Carbonic acid is not all that stable though, and will decompose back to water and carbon dioxide when heated**. This makes the thermal dependency of solubility much more pronounced.*Except hydrogen, which does the opposite, but this question is not about hydrogen. Hydrogen usually does it’s own thing, so you can’t use the normal rules for it in most cases anyhow.**The thermal decomposition of carbonate salts is how baking soda works by the way.
How can a body of water absorb CO2?
Water absorbs CO2 and other gases by diffusion, molecules of CO2 move from an area of high concentration to an area of low concentration. At any given temperature and pressure, a balance will be achieved, some CO2 will leave the water and some will be absorbed.If the temperature and/or pressure change, the balance is thrown off so CO2 diffuses from the water in the case of increased temperature and/or lower pressure - same idea in reverse if temp lowers and/or pressure increases.Warmer water holds and can accept less CO2 than colder water.Higher atmospheric CO2 levels lead to more diffusion of CO2 into water bodies until a balance is reached.You can force a lot of CO2 into water with a device like a SodaStream. If you have access to one of these devices, you can try some experiments.fill a SodaStream bottle with warm water (40 - 50 degrees C) attach it to the device and follow the instructions on the machine for consistency, label this bottle WARM **** do not use boiling water, the bottles can’t handle the pressure at high temperatures *****fill another bottle with cold water (5 - 7 C) attach it to the device and follow the instructions making sure that you press the button for the same amount of time as with the warm water test, label this bottle COLDPut both bottles in the refrigerator or on ice for several hours until both bottles are the same temperature.Open both bottles one after another, is the escape of gas the same?Pour a glass of water from each bottle, which one has more bubbles?Observe both glasses to see which one loses it’s fizz faster.The SodaStream device forces CO2 into the bottle where it diffuses into the water at high pressure, when you open the lid, the pressure drops and the gas comes out of solution.If you don’t have a SodaStream device, you can do the following;put a can or bottle of Coke in a refrigerator for a few hoursput another can in a warm place for a similar amount of timeopen each one and observe which one has the louder “pop” when it’s openedpour a glass from each container and observe the bubbles and how long it takes each to go “flat”you could also pour a glass of Coke and put it in the refrigerator to see how long it takes to go “flat”Even when Coke is flat, it still has CO2 dissolved in it, just not enough to force its way out of solution violently.
How do elodea absorb sunlight carbon dioxide and water?
Carbon dioxide dissolves in water to form carbonate ions. The ions and water are absorbed directly through the leaves and stems of the plants. Sunlight penetrating the water is absorbed by chlorophyll molecules found in the chloroplasts of the leaves.
Does boiling remove the CO2 from water?
George N is correct, in that boiling would remove (or at least highly reduce) any dissolved CO2. Just as it does dissolved O2. But it should also be mentioned that if the boiled water is left to sit, it will reabsorb both O2 and CO2 from the atmosphere. So if the container had an open top, the plant would be able to undergo photosynthesis. If it was a closed container, such as a jar that had been capped until the water cooled, and again once the plant had been added, it probably wouldn't be able to, unless there was a different source of carbon in the water (impurities). And even pure water (distilled water) would absorb CO2 and O2 from the air if left in an open container.
What is the maximum amount of CO2 that could be absorbed in water at 1atm and room temp (25C)?
You can use Henry’s equation:Henry’s constant (H) = Partial pressure(P) /Concentration in the solution (C)C=P/HIf you have CO2 at 1 atm. P = 1atmIf H = 29.4 atm/M, you can then apply the equation to calculate the concentration in water.However, the question is does Henry’s constant for CO2 change with pH. As the concentration of CO2 dissolves in the water, the pH will change according to the Henderson Hasselbach equation. (Maybe someone could ask this question instead).
What is formed when carbon dioxide and water react?
CO2 dissolves in water, and some of it reacts with water molecules to produce a slightly acid solution called carbonic acid. The (aq) indicates water solution. The hydrogen carbonate compound cannot be isolated as a pure substance - it decomposes easily to produce water and CO2 gas.CO2(aq) + H2O ←→ H2CO3(aq)This is a weak acid, so some of it dissociates to produce H+ ions, hence it’s a slightly acidic solution, forming the hydrocarbonate ion.H2CO3(aq)→ H+(aq) + HCO3-(aq)And HCO3-(aq) → H+(aq) + CO3–2(aq)All of these are reversible.
Why does KOH (potassium hydroxide) absorb CO2?
It is similar to an acid-base neutralization reaction, which is driven by favourable energy change.KOH is a strong base (alkali) and CO2 is an acidic oxide. So, the two readily react to form salt and water.2KOH + CO2 = K2CO3 + H2O