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The sample must contain Uranium-235.

Q: To perform Uranium-235 dating on a sample what must be true?

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The sample must contain radioactive elements.

they must be correct and they must be the right kind of sample

You must keep a sufficient amount of sample to repeat analyzes if necessary and also to have a control (archive) sample.

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.

urine sample should be between 98-100 degrees F, I got this info at a store that sells pass urineproducts test

Related questions

The sample must contain radioactive elements.

The purest uranium is obtained after a long series of chemical processes. Ex.: grinding, dissolving, filtering, ion exchange separation, solvent extraction, etc.

The artifact must contain carbon-14.

they must be correct and they must be the right kind of sample

The sample must be large and random.

It is not a sample. A sample must be a proper subset of the whole population.

The sample must have a high probability of representing the population.

What two features must a sample have to accurately represent a population?

No.

they must be correct and they must be the right kind of sample

The writer must perform an equal or similar function

The larger the sample, the greater the accuracy, but in every case, the sample must be truly random.