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What percentage of dry air is water?
Ordinary room air will have only about 4% of water vapour in it, but this can increase quite a lot before the air feels uncomfortable.Relative Humidity is the usual measure of the amount of water vapour in the air, and can vary from a few% (normal) to over 90% (humid). At 90%, the air is NOT 90% water vapour; that figure indicates that the air contains 90% of the amount of water vapour it could contain when fully saturated.For very low percentages of water vapour in the air, (say below 1%) a useful measure and one more easily made, is to measure the dew point of the air. For this, the instrument contains a small shiny mirror that may be cooled to the point where dew just forms on the mirror surface, thus spoiling the reflection.
What is the pH level of seltzer water?
Approximate pH of 4, pH will vary based on the amount of CO2 as well as other minerals in the seltzer and the pH of the water.
Why is there more oxygen present in salt water than in fresh?
The amount of oxygen disolved in water may vary. The capacity of water to absorb oxygen (which is not necessarily how much is actually absorbed) depends mainly on the temperature. I don't think the water being salty makes much of a difference.
What is the formula for dilute acid making from concentrate acid?
Choose an acid and then add acid to water (and NEVER add water to acid). The amount of water, depends on the exact concentration of the dilute acid needed. The molecular formula of the acid will not vary after dilution, just its concentration will reduce.
What is a manipulated variable in which can freeze faster salt or sugar?
If you're trying to set up an experiment, the manipulated variables would be salt and sugar, and varying ratios of salt to water or sugar to water. Say you wanted to find out how fast water froze if it had sugar in it, and wanted to compare it to how quickly it froze with salt. Your controls would be the amount of water, the type of container, and the temperature of the freezer. You could pour 18 plastic cups of water, 6 plain water (the control), 6 with salt and 6 with sugar. You could also vary the amount of sugar or salt in the water (say, .5% to 2.5%, with an increase of .5% in each cup).
Does the amount of water vapour vary from place to place?
Yes it does. I'm sorry I don't know more details :)
What percentage of dry air is water?
Ordinary room air will have only about 4% of water vapour in it, but this can increase quite a lot before the air feels uncomfortable.Relative Humidity is the usual measure of the amount of water vapour in the air, and can vary from a few% (normal) to over 90% (humid). At 90%, the air is NOT 90% water vapour; that figure indicates that the air contains 90% of the amount of water vapour it could contain when fully saturated.For very low percentages of water vapour in the air, (say below 1%) a useful measure and one more easily made, is to measure the dew point of the air. For this, the instrument contains a small shiny mirror that may be cooled to the point where dew just forms on the mirror surface, thus spoiling the reflection.
What is the amount of water vapour per unit volume of air called?
The amount of water per unit air is called, I believe the Absolute Humidity, and this is closely related to dew point. If the amount of water in a parcel of air remains constant, the temperature and relative humidity can vary all over the place, but the absolute humidity is constant and so, I believe, is the dew point.
What is the most common gas found in the air we breathe?
Often it is water vapour, which can vary from 0 to 4 %. Otherwise it is argon, at nearly 1%
'how does the amount of water vapor vary in the atmosphere?
Geathen rocks
Why does the amount of precipitable water vary with the mean temperature of the troposphere?
ninjas
What causes classifying clouds to vary?
the shape and height causes it to vary with temperature,pressure,and the amount of water vapor in the atmosphere
How much sodium in well water-?
There is an average of 12.5 to 14.5 mg of sodium in well water, but this can vary greatly.
List three factors that might cause migration patterns to vary?
The vary of the amount of food and water available, the temperature, and the distance the animal travels.
What is the second most common gas in earth's atmosphere?
Often it is water vapour, which can vary from 0 to 4 %. Otherwise it is argon, at nearly 1%
Why might the level of the water table vary through the year?
The level of the water table may vary through the year depending on the amount of rain and snow that falls. If high levels of precipitation occur, the levels will increase.
How long can gravel retain water?
The amount of time that gravel can retain water will vary depending on its state. Fine gravel will holder water for long as opposed to coarse gravel.
