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Thorium-234 has a half life of about 24 days of a sample that originally contained 100 grams of thorium-234 now only contains 25 grams.what is the age of the sample?

25 grams of Thorium-234


What is the total number of atoms contained in a 1.00 mole sample of helium?

The total number of atoms contained in a 1,00 mole sample of helium is 6,022 140 857.10e23.


How many moles are contained in 4.67 L sample of gas 33 degrees Celsius and 199 kpa?

how many moles are contained in 4.67 L sample of gas at 33 degrees celcius and 199 kpa


If you found a sample that contained approximately 3 emenemonium how old would it be?

2


How many molecules are contained in a g sample of dimethylmercury?

1.24*10^22


How many molecules are contained in a 6.95 g sample of dimethylmercury?

1.814*1022


What food sample is contained when it turns a moist pH paper blue?

The pH is 12 dooufus


How many moles of caffeine C8H10O2N4 are contained in a 100. mg sample of caffeine?

The answer is 5,15.1e-4.


What metal ion would you predict to be contained in sample of unknown 1?

Strontium and copper nitrate


How many molecules are contained in a 5.20 g sample of dimethylmercury?

The answer is 1,357.10 ex.23 molecules.


After 36.9 years a sample of hydrogen contains one-eighth the amount it contained originally what is the half-life of the isotope?

The half-life of the isotope in question is 12.3 years. This can be calculated by dividing the time it took for the sample to decrease to one-eighth its original amount (36.9 years) by 3, which represents the number of half-lives it took to reach that point.


The purpose of statistical inference is to provide information about the?

The purpose of statistical inference is to obtain information about a population form information contained in a sample.