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A student dissolves 10 grams of salt in a beaker with 1 liter of water how can the student get the salt back?

The student can retrieve the salt by evaporating the water. They can do this by heating the solution in the beaker until all the water evaporates, leaving behind the salt. The salt can then be scraped or collected from the bottom of the beaker.


When a teaspoonful of sugar is added to water in a beaker the sugar dissolves The resulting mixture is?

a homogeneos solution


Suppose you want to find the mass of a powdered solid in a small beaker. What two measurements must you make in order to obtain an accurate measurement of the solid's mass?

Measure the mass of the beaker including the powdered solid. Then empty the beaker, make sure ALL traces of the powder have been removed and measure the mass of the empty beaker. The difference between the two measure is the measure of the powdered solid.


When ammonium chloride dissolves in a beaker of water the beaker becomes cold to the touch explain this phenomenon?

When the ammonium chloride dissolves in the water, it is an endothermic reaction. The energy for the reaction comes from the water. Since the water is losing energy, the temperature of the solution decreases, which in turn decreases the temperature of the beaker because of heat transfer.


Is it important to dry a beaker before collecting a solution?

Yes, it is important to dry a beaker before collecting a solution as any remaining liquid in the beaker could dilute the solution being collected, affecting the concentration and accuracy of the solution. Drying the beaker also helps to ensure that the solution is not contaminated by any residual water or impurities from the beaker.


How can you increase how quickly colour diffuses through the beaker?

You can increase the rate of color diffusion by increasing the temperature of the solution, stirring the solution more vigorously, or increasing the surface area of the color source (e.g., using powdered dye instead of solid dye).


How many grams of sodium metabisulfite is needed to make 10 percent solution?

Put 100 grams in a beaker and and around 500 mls of water until it dissolves, then top up the beaker to a liter. That is your 10% solution. The percentage solution is a ratio of the weight of the compound to the weight of the final solution.


If A beaker contains 100 grams of 1.7 M NaCl and you transfer 50 grams what is the molarity of the solution in the beaker?

After transferring 50 grams of the 1.7 M NaCl solution to a new beaker, the final amount of NaCl in the original beaker will be 50 grams. To find the new molarity, you would first calculate the new moles of NaCl in the beaker, then divide by the total volume of the solution in liters. The molarity will be reduced in the original beaker due to the dilution from transferring a portion of the solution.


Why is it important to let the sand settle first at the bottom of the beaker before pouring the solution into another beaker?

Letting the sand settle at the bottom of the beaker helps separate it from the solution, reducing the risk of contaminating the solution with sand particles. This step allows for cleaner and more accurate transfer of the solution into another beaker for further processing or analysis.


What is chemical system?

A chemical system consists of the system and the surroundings. If you're dealing with a solution in a beaker, the solution would be the system and the beaker and air would be the surroundings.


Was the time required to change the solution different for the two beakers?

Yes, the time required to change the solution was different for the two beakers. Beaker A took longer to change the solution compared to Beaker B.


A bag with a 2 percent solution is placed in a beaker that has a 10 percent solution is the solution in the bag hypotonic hypertonic or isotonic?

The solution in the bag is hypotonic compared to the solution in the beaker. This is because the bag has a lower concentration of solute (2%) compared to the beaker (10%), so water will tend to move into the bag to equalize the concentrations, causing the bag to swell.