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How do you properly use a pycnometer for measuring the density of a substance?
To properly use a pycnometer for measuring the density of a substance, first clean and dry the pycnometer. Then, weigh the empty pycnometer and record the mass. Fill the pycnometer with the substance, making sure there are no air bubbles. Weigh the filled pycnometer and record the mass. Calculate the density using the formula: density (mass of substance)/(volume of pycnometer).
Why is enthalpy of solution of 4g of anhydrous copper sulphate lower than the expected value?
Firstly, what do you mean by "lower"? Do you mean less exothermic? If that is what you mean, then one possible reason is that your anhydrous copper sulphate was not truly anhydrous, and that is highly likely. Did it look a bit blue? If so then it had absorbed some water from the air and therefore you did not weigh out as many moles of it as you had thought - hence less heat was released in your experiment.
How much do 50ml weigh?
The weight of 50ml will depend on the density of the substance you are measuring. To calculate the weight, multiply the volume (50ml) by the density of the substance in grams per milliliter (g/ml).
Steps for the preparation of a standard solution?
1. Weigh the necessary substance 2. Put this substance in a bottle or Berzelius, Erlenmeyer flask. 3. Add slowly the adequate volume of solvent and stir. 4. Apply a label (date, name of the operator, name of the solution, concentration, etc.).
How do you determine the density of a granular substance which is insoluble in water?
Using Archimedes principle we can find the density of such object. First let's weigh the body hanging in air using a physical balance. Let it be w1 Now immerse it in water kept in a beaker and weigh once again. Let it be w2. Now using the expression density can be found. Density = w1/ (w1 - w2)
Why is it necessary to weigh by difference?
Weighing by difference is necessary to accurately determine the amount of the substance being measured, as it accounts for any impurities or moisture that may be present. By subtracting the initial weight of the container from the final weight of the container with the substance, we obtain the weight of the substance itself. This method ensures the measurement is more precise and reliable.
Why do you have to weigh the empty container first before placing the substance to be weigh?
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How much does the volume of the substance weigh?
Volume does not weigh. The two are different characteristics of objects and there is no relationship between them.
How much does halfcup weigh?
That depends on the substance being measured. Lead will weigh more than feathers.
How much does anhydrous ammonia weigh per gallon?
Ammonia weights 5.15 pounds per gallon in contrast to water which weights 8.33 pounds per gallon.
How much does 800cc weigh?
800cc of what? It all depends on the substance in which is is 800cc.
How much does 18.9 fluid oz weigh in grams?
It depends on the substance
How many mg per millilitre?
Depends on the substance. A given volume of one substance can weigh more or less than the same volume of another substance.
How much does 800ml weigh?
The weight of 800ml of a substance will depend on the density of that substance. For water, which has a density of 1g/ml, 800ml would weigh 800 grams. For other substances, the weight could be different.
How much does a qt weigh?
It's a measurement of volume so that depends on the substance.
What does 70 percent Isopropyl Alcohol Weigh?
The weight will depend on how much of the substance there is.
How much does 1 cubic cm weigh in grams?
It depends on the density of the substance
