It is doubtful that the walls of the sample holder in the calorimeter start at the same temperature as the sample. By stirring it, you can help equalize the temperature throughout the sample and bring the sample and the sample holder into thermal equilibrium before you start the measurements.
Stirring the contents of the calorimeter ensures that there are no temperature gradients within the contents. Stirring will also ensure that your reaction has completed.
Yes, it is a mixture, since two or more substances are being mixed without combining chemically. It is a heterogeneous mixture since they don't mix completely.
fish sauce is fish scales boiled in water with loads of salt poured into it.
sodium react violently with acids to produce salt and hydrogen! so we have to make sure the mixture is neutral.
Calcium carbonate can be removed from a mixture by using a process called filtration or decantation. In filtration, the mixture is passed through a filter paper, which allows the liquid to pass through while retaining the solid calcium carbonate. In decantation, the mixture is left undisturbed to allow the solid calcium carbonate to settle at the bottom, and the liquid can then be carefully poured off.
Trail-mix is a heterogeneous mixture: It contains visually different solid materials.
The purpose is to avoid splashing.
a mixture
natron which is a mixture of oils and spices.
The sugar dissolves. The sand does not.
Yes, it is a mixture, since two or more substances are being mixed without combining chemically. It is a heterogeneous mixture since they don't mix completely.
fish sauce is fish scales boiled in water with loads of salt poured into it.
It depends on the amount of bleach poured into the mixture. If it is too much it can cause the paint to fade and rubber trims on the vehicle to get damaged.
Yes there is such thing of moulds. In the process of making chocolate the mixture gets poured into moulds to set and to be made into a certain shapw
Crayons are made of paraffin wax and pigment. The wax is hot when the pigment is added and mixed. Then the mixture is poured into crayon molds and cooled.
Concrete is composed of water, cement and sand. It has three constituents. Concrete is mixed as a wet mixture, poured into place and allowed to harden and dry.
when the engine is run the oil and water will make a thick pudding like mixture that will not lubricate the engine, you will need to change the oil and filter again. ( this mixture can clog the filter ) You may also need to do an engine cleaning procedure as well, that mixture will stick to everything and be there after several oil changes.
Salt will not be attracted to a magnet. A magnet can be used to separate the two. Heterogeneous means it can be mixed but it is not chemically combined