0
What would happen if a glowing splint is held at the mouth of a beaker containing a piece of potassium and water And what is the gas evolved?
If a glowing splint is held at the mouth of a beaker containing potassium and water, the potassium will react violently with the water, producing potassium hydroxide and hydrogen gas. The hydrogen gas is highly flammable, and as it is released, it can ignite from the heat of the reaction, resulting in a small explosion or fire. The gas evolved during this reaction is hydrogen.
What else can I help you with?
A beaker containing 80 grams of KNO3 in 100 grams of water have a temperature of 30 and Acirc and degC. Approximately how many grams of the salt are undissolved on the bottom of the beaker?
The mass of undissolved potassium nitrate is cca. 3 g.
Is calcium chloride and potassium chloride crystals in a beaker a pure substance?
Calcium chloride and potassium chloride are pure substances.
Ken had a beaker containing 54g of potassium chloride dissolved in 100cm3 of water at 90 degrees. he cooled the solution to 40 degrees. what would he see as the solutio cooled to 40 degrees?
As Ken cooled the potassium chloride solution from 90 degrees to 40 degrees, he would likely observe crystallization occurring. This is because the solubility of potassium chloride decreases with temperature, leading to the formation of solid crystals as the solution becomes supersaturated. He may see white crystals forming at the bottom of the beaker or floating in the solution as the solute precipitates out.
Why does ice often form on he outside of a glass beaker containing dry ice?
A beaker of Dry Ice will have VERY cold, glass walls. The moisture in the surrounding air comes into contact with the cold surfaces, condenses and freezes on them. Thus, your ice formation on the beaker.
Why does ice form on the outside of a beaker containing dry ice?
The air around the beaker is cooled by the intense cold of the dry ice, causing water vapor in the air to condense and freeze on the surface of the beaker. This results in the formation of ice on the outside of the beaker.
A beaker containing 80 grams of KNO3 in 100 grams of water have a temperature of 30 and Acirc and degC. Approximately how many grams of the salt are undissolved on the bottom of the beaker?
The mass of undissolved potassium nitrate is cca. 3 g.
Why did the potassium beaker not react when the flaming splint was used?
The potassium beaker did not react with the flaming splint because potassium is not a flammable substance. Potassium is a reactive metal that can react vigorously with water or air when exposed, but it does not burn in the presence of a flaming splint. The lack of reaction is due to the properties of potassium and its inability to support combustion.
What you use a beaker for in science?
Containing liquids that are possibly harmful.
Is calcium chloride and potassium chloride crystals in a beaker a pure substance?
Calcium chloride and potassium chloride are pure substances.
What laboratory tools are used to containing liquids and substances?
A Flask or Beaker.
Ken had a beaker containing 54g of potassium chloride dissolved in 100cm3 of water at 90 degrees. he cooled the solution to 40 degrees. what would he see as the solutio cooled to 40 degrees?
As Ken cooled the potassium chloride solution from 90 degrees to 40 degrees, he would likely observe crystallization occurring. This is because the solubility of potassium chloride decreases with temperature, leading to the formation of solid crystals as the solution becomes supersaturated. He may see white crystals forming at the bottom of the beaker or floating in the solution as the solute precipitates out.
What is occurring when a piece of potassium metal ignites in a beaker of water?
The potassium reacts with water to produce potassium hydroxide, hydrogen gas, and large amounts of heat. The heat ignites the hydrogen which in turn ignites the potassium.
Explain Why a beaker containing sand and water is mixture although sand itself is a pure substance?
Because you mixed sand and water together in the beaker.
If a beaker contains glucose and is permeable to glucose what will happen to the glucose?
If a beaker containing glucose is permeable to glucose, then the glucose will go through the beaker.
What happens when a strip of red litmus is immersed in a beaker containing 10% sodium hydroxide?
fica molhado
If you pour germinating peas in a beaker and boiled peas in another in which beaker will the temperature rise?
The temperature will rise in the beaker containing the germinating peas due to the metabolic processes of germination producing heat. The boiled peas do not have living metabolic activity, so they will not generate heat in the same way.
Why is a beaker containing sand and water considered a mixture?
Anything containing two separate entities is a mixture. Sand and water is a heterogeneous mixture because it is not the same throughout.
