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What is counter sample?

Updated: 12/19/2022
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Julia pours three samples of water She leaves one sample on the counter top another in the freezer one sample outside in the sun The next day each sample of water is most likely to have the same what?

Julia pours three samples of water she leaves one sample on the counter top another in the freezer and leaves one sample outside in the sun the next day each sample of water is most likely to have the same (A)temperature (B) state of matter (C) boiling point


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In the beta-counter or liquid scintillation counter, the sample is dissolved in an organic scintillation solution. Due to the resulting 100% counting geometry and the absence of any detector window, this means that the counter has excellent properties in detecting radionuclides of low activity emitting low energy beta-particles, such as H3 and C14. The light photons from the sample are collected by two photomultipliers in coincidence. This arrangement will reduce the background due to thermal noise and only true scintillation events will be analysed and counted. The main problem in liquid scintillation counting is the varying counting efficiency due to quenching of scintillation events. This process is caused by chemical contamination of the sample and/or a coloured sample. This means that the counting efficiency has to be determined for every sample. Therefore a quality control of the instrument must include a control of the correction methods. Otherwise the QC methods will be the same as for any scintillation counter. The sources needed for QC of a liquid scintillation counter include calibrated sources of H3 and C14 with different counting efficiencies as well as a background sample.


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Programme to write positive numbers until the user enters no and then sum the numbers divisible by 4 that lie between the range of 10 and 50 and finally display the count and the average value?

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Do toilets have more bacteria than your kitchen counter?

If the counter is left unclean for the same lengthof time as the toilet the counter which is most commonly used more then the toilet will harvest more bacteria. If one is preparing chicken or some kind of meat and some is left on the counter that sample will cultivate millions of colonies and spread it throughout the table.


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