A paffin wax candle is used to heat up a can of water. The candle had a mass of 15.75g before the burn and 14.20g after the burn. The can contained 250.0 of water at an initial temperature of 13.0 C. What is the heat of combustion in kJ/g of paraffin? The specific heat capacity of water is 4.184 J/(g C)
You measure the ambient temperature before the experiment in case the experiment is sensitive to ambient temperature. You want to record all of the environmental factors that might affect the experiment before starting it. You measure the ambient temperature after the experiment for the same reason, and also in case the experiment affected the ambient temperature. Depending on the experiment, environmental factors may need to be considered when analyzing the results.
Fahrenheit created the first thermometer for measuring temperature. Before he created his thermometer, people did not have a precise way to describe temperature.
Temperature can have two primary effects. First, keep in mind that the rate a bullet drops always remains the same. What changes is the amount of range we can get out of a bullet before it drops a certain amount. The first effect is that generally, higher temperatures means more initial velocity when the bullet leaves the barrel. This usually means more range. The second effect is that the air is less dense, and therefore creates less drag on the bullet. Again, this means more range.
its so obvious yaar. just to clean it and bring the temperature at 0 so that when it is put in a persons mouth it gives a right temperature.
The labeling of the vinegar bottle with less contents than what was actually in the bottle might have been because they thought a little might evaporate before it was purchased by the consumer. Sometimes companies will do this so as to account for loss during settling of contents.
What will happen when the melted paraffin wax begins to solidify before casting the subject?
The paraffin wax is usually heated and added to Methanol before dispersing in the Methylene Chloride.
Food colouring is not your best choice to colour paraffin. Food colouring is in a liquid base that has to evaporate from the paraffin before you can pour it, and the results will be patchy and not very pleasing. For an inexpensive colourant for paraffin use old crayons. Remove the paper wrappers, break them up into small pieces and stir them into the hot paraffin, blend well for an even colour and pour the paraffin into candle molds or whatever your project calls for.
The initial stress is the stress of the object before any force is applied to it, which in most cases would be zero ideally. However, the different composites that make up the material react differently to external influences, temperature comes to mind, and may therefore have a net, non-zero stress before an external load is applied.
Well, a clinical thermometer is shook after use so that the mercury comes back to its initial point i.e. where it had been before the temperature was taken.
This is the formula for finding calories: calories= (Tf-Ti)mass Or, in words, you subtract the final temperature (the temperature of the fused waters) by its initial temperature (the hot/ cold water's original temperature). You then multiply this answer by the mass of the water before you mix them together. Your hot and cold water should both have the same mass, but not the same temperature.
The final temperature of the water will depend on the initial temperatures of the metal and the water, as well as their respective masses and specific heat capacities. Heat will flow from the metal to the water until thermal equilibrium is reached, resulting in a final temperature somewhere between the initial temperatures of the two substances.
All space and time as we know it was all contained in a singularity which is known as the Big Bang, but before it explode.
The speed of the vehicle before deceleration or braking.
The brass needs to be immersed in the boiling water for a sufficient enough time that its temperature is the same as the boiling water, 100 degrees Celsius. That will be the initial temperature of the brass. After it is quickly placed in the calorimeter which will contain much cooler water, causing the brass to cool down and the water to heat up until the point where the temperature no longer changes. At that point the temperature of the brass is the same temperature as the water in the calorimeter, which is its final temperature of the brass.
The initial steps to take before making a will is that you should contact your lawyer and make sure you have a witness present you should decide what you want to go to who and be prepared to tell the lawyer.
Room temperature