You can do that or you can zero balance the scale with the empty beaker on it before adding the substance to be measured to the beaker.
The most efficient, and safe, place for a beaker to be heated is above the flame. Have the beaker held up by the proper metal stand and have it held so that the flame is grazing the bottom of the beaker. Be careful though, the flame should only graze the bottom of the beaker so that the chemical doesn't heat up too quickly.
stones :)
Beakers that will be used to collect solutions should be completely dry before use due the possibility of water being able to dilute the solution that will be placed inside of the beaker. If a beaker is not completely dry before collection of a solution, an inacurracy in data results may occur.
Generally, a beaker (a glass jar) is used to measure volume (litres, gallons, pints, etc), not mass (kilograms, pounds, stone, etc). However, if you know the volume and density of the material in the beaker, you should be able to calculate its mass in kilograms. Density = Mass/Volume (mass over volume)
The students should not use the beaker with the crack as it poses a risk of breaking further while pouring water, potentially causing injury. They should find a different beaker that is intact and safe to use for their experiment.
You can do that or you can zero balance the scale with the empty beaker on it before adding the substance to be measured to the beaker.
it is because sweat and other substances especially colored ones may be present there. so it is best not to touch chromatogram papers to aviod contaminating it and getting erroneous results..:) chem.student..:)
Hold it by the top or use a clamp. But make sure before you take the temperature you stir the liquid around in the beaker first and that you do not let it touch the bottom of the beaker as the glass will be hotter than your liquid.
To interpret an HPLC chromatogram effectively, one should analyze the peaks' retention times, peak shapes, and peak heights. Retention times indicate the compounds' elution order, peak shapes can reveal the compound's purity, and peak heights show the relative concentrations of the compounds. Additionally, comparing the chromatogram to a standard can help identify and quantify the compounds present.
How much a beaker weighs depends on the size of the beaker and the thickness of the glass. A small beaker might weigh a few ounces while a large beaker will weigh several times that.
The marble will have the motion of the person who dropped it (I assume you mean by 'dropped' that it is not thrown by the person, just dropped), whilst I assume the beaker is stationary. I also assume the person is moving horizontally and the beaker is upright. Therefore the marble will arrive in the beaker with some sideways velocity and will strike the side of the beaker with a horizontal component of velocity as well as a vertical component. I should think it will spin round the beaker a few times before coming to rest, it might even bounce right out. You can't predict this exactly without some more information.
The most efficient, and safe, place for a beaker to be heated is above the flame. Have the beaker held up by the proper metal stand and have it held so that the flame is grazing the bottom of the beaker. Be careful though, the flame should only graze the bottom of the beaker so that the chemical doesn't heat up too quickly.
they should immediatly tell the teacher and listen to her instructions
Tongs or heat-resistant gloves should be used to remove a hot beaker from a flame to prevent burns. Never use your hands directly to handle hot items in a laboratory setting.
Graduated Cylinder (A+)
The material in the acidic beaker should have a lower pH compared to the material in the basic beaker before any acid or base is added. This is because the acidic beaker contains an excess of hydrogen ions, resulting in a lower pH, while the basic beaker contains an excess of hydroxide ions, leading to a higher pH.