Because if the ice is wet then you've got ice and water there and
1 these have different thermal properties
2 you won't necessarily know the amount of water that's there so if you assume the weight of "ice" is all ice your results will be wrong.
Yes, it is necessary to subtract the water vapor pressure of water when conducting an experiment with butane to account for the partial pressure of water vapor in the system. This helps ensure that the pressure measurement reflects the pressure of the butane gas alone.
The dependent variable would be the freezing point of the solution.
Adding excessive quantities of wash water to the calcium oxalate and water precipitate might result in the loss of some of the precipitate during filtration due to increased solubility. This could lead to an underestimate of the mass of calcium oxalate obtained in the experiment.
The soap and pepper experiment demonstrates surface tension by showing how soap disrupts the surface tension of water. When pepper is sprinkled on water, it floats due to surface tension. Adding soap breaks the surface tension, causing the pepper to move away from the soap. This experiment helps illustrate how surface tension works and how it can be affected by different substances.
Yes. And once you start filling your pool, do not stop until the water is up to the tile line. Stopping the water for a prolong time could cause a stain line around the perimeter. If you are filling your pool with well water you may want to pre-filter it to take out the tannins and any metals. If you can't pre-filter your well water; get your system up and running ad treat the water with a stain and scale additive.
It is not necessary.
Yes, it is recommended to boil water before adding pasta to cook it.
If water is not still before an experiment then if the experiment involves measuring water then the measurement would not be accurate. Also if there is something in the water you might spill it out and spoil your experiment.
By adding the necessary reagent, acidic or basic.
Yes, it is necessary to subtract the water vapor pressure of water when conducting an experiment with butane to account for the partial pressure of water vapor in the system. This helps ensure that the pressure measurement reflects the pressure of the butane gas alone.
The experiment involves adding salts to water until the solution becomes so dense that an egg will float or float to the surface, rather than sink. This usually requires that the water be heated. But as is the case of the Dead Sea, hypersaline water can occur naturally. There are links in the related links below.
So the salt dissolves
Its ok as long as you let the water cool to room temperature before adding the water back to the bowl, or adding the betta to the water. Also, it is completely unnesseary to boil before putting in your betta's bowl.
Yes, it is recommended to boil water before adding rice when cooking as this helps the rice cook evenly and thoroughly.
No, you cannot dry pour concrete without adding water. Water is necessary to activate the chemical reaction that causes the concrete to harden and set properly.
The independent variable in this experiment is the amount of table salt added to the boiling water. The effect of adding salt to the water is to raise the boiling point of the water, therefore increasing the temperature at which the water boils.
How much rot? Where is the rot and what is that board doing for the structure? Where is the water coming from that caused it? What is going to be affected if you leave it in place?