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The sample must contain Uranium-235.
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What must be true for radioactive dating to be possible with a certain sample?
The sample must contain radioactive elements.
What two things must be true for samples to be useful?
they must be correct and they must be the right kind of sample
When anazlyzing a water sample for presence of an ion using precipitation reactions why should the entire sample not be used in the process explain?
You must keep a sufficient amount of sample to repeat analyzes if necessary and also to have a control (archive) sample.
Can you use bleach and vinegar to help control Iron in well water?
No. -Iron must be filtered out by different methods. Get a sample tested to know how much iron you have.No. -Iron must be filtered out by different methods. Get a sample tested to know how much iron you have.
What temperature must a urine sample be?
urine sample should be between 98-100 degrees F, I got this info at a store that sells pass urineproducts test
What must be true for radioactive dating to be possible with a certain sample?
The sample must contain radioactive elements.
What do you do to perform Uranium-235 dating on a sample?
The purest uranium is obtained after a long series of chemical processes. Ex.: grinding, dissolving, filtering, ion exchange separation, solvent extraction, etc.
In order to perform carbon 14 dating on an artifact what must be true?
The artifact must contain carbon-14.
What two things must be true for a sample to be useful?
they must be correct and they must be the right kind of sample
What two features must a sample have if its to accurately represent a population?
The sample must be large and random.
What is a sample that that consists of everyone in the population?
It is not a sample. A sample must be a proper subset of the whole population.
When using data from population genetics research the sample must be?
The sample must have a high probability of representing the population.
What two features must a sample have to accurately represent a population?
What two features must a sample have to accurately represent a population?
Sample size must be equal for null hypothesis?
No.
What two things must be true for samples to be useful?
they must be correct and they must be the right kind of sample
A major rule in coordinating sentences is that a writer must coordinate elements that perform what?
The writer must perform an equal or similar function
How is that the random sample gives a fairly accurate representation of public opinion?
The larger the sample, the greater the accuracy, but in every case, the sample must be truly random.
