Methods of analytical chemistry are applicable.
Refrigerating a urine sample helps to slow down the growth of bacteria that can cause the sample to deteriorate or become contaminated. This helps to maintain the integrity of the sample for accurate testing and analysis. Refrigeration also helps preserve the chemical composition of the urine for more reliable results.
your question is incomplete or incorrectly worded You want to know how much copper is in 100 grams of an unknown sample. The unknown could be made of anything, it may not even contain copper. You should include more information in your question
Back titration is often used when the analyte reacts slowly with the titrant or when interfering substances are present in the sample that can interfere with the direct titration process. Additionally, back titration can be more accurate when dealing with weak acids or bases where the endpoint may not be easily detected.
Adding heat to a sample of particles increases their average kinetic energy, causing the particles to move faster and collide more frequently. This can lead to changes in the phase or state of the sample, such as melting, boiling, or sublimation, depending on the specific material.
The solutions or solids have already touched other surfaces or objects causing them to be contaminated and more bacteria/ or other living cell forms to be put into the substance that were not there to begin with.
Refrigerating a urine sample helps to slow down the growth of bacteria that can cause the sample to deteriorate or become contaminated. This helps to maintain the integrity of the sample for accurate testing and analysis. Refrigeration also helps preserve the chemical composition of the urine for more reliable results.
The standard deviation would generally decrease because the large the sample size is, the more we know about the population, so we can be more exact in our measurements.
Yes, you can test your blood sugar through a urine sample. The sample is checked with a colored dipstick that measures the presence of glucose in the urine. The blood sugar test with the blood sample is more accurate and more conventional.
A spectrophotometer can be used to know if a sample is DNA or RNA. DNA has an absorbance maximaat 260nm, whereas RNA has an absorbance maxima at 280nm. By looking at which one of these two wavelengths the sample is more excited, one can determine if the sample is DNA or RNA.
If a potassium chlorate sample is contaminated with KCl, the experimental percent oxygen would be lower than the theoretical percent oxygen. This is because KCl does not contain oxygen, so the contamination would dilute the amount of oxygen produced during the decomposition of potassium chlorate.
polluted water is more dangerous for use and contaminated water is poisiones then polluted
A 'random' sample - covers all age groups, genders, and other criteria. A 'targeted' sample might only cover a small part of the population.
The beer was safer to drink, because plain water was often contaminated with bacteria and other impurities.
The beer was safer to drink, because plain water was often contaminated with bacteria and other impurities.
In order to answer the question it is necessary to know the population standard error.
I depends on the doctor. I assume that the vet might want to take a urine sample of the kitten; after all, medical professionals are more "accurate" with these things, if you know that I mean.
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