After 24,10(3) days (the half-time of this isotope) the mass is 50 %.
After 2 half-lives, 25% of the original amount of thorium-234 will remain. This is because half of the substance decays in each half-life period.
Half the original amount.
25 gExplanation:Think about what a nuclear half-liferepresents, i.e. the time needed for an initial sample of a radioactive substance to be halved.
You cannot compare ounces (mass or weight) with gallons (volume).
India has one of the largest thorium reserves in the world, estimated to be around 25-30% of the global reserves, totaling about 846,000 metric tons. This makes India a key player in the development of thorium-based nuclear technology and energy production.
After 2 half-lives, 25% of the original amount of thorium-234 will remain. This is because half of the substance decays in each half-life period.
To calculate the amount of thorium remaining after 2 half-lives, you use the formula: amount = initial amount * (1/2)^n, where n is the number of half-lives. If we assume the initial amount is 1 gram, after 2 half-lives, there would be 0.25 grams of thorium remaining.
Thorium-234 has a half-life of 24.1 days. How much of a 100-g sample of thorium-234 will be unchanged after 48.2 days?
90 in ground state
Ceramic bowls for kitchen, with thorium, doesn't exist.
Half the original amount.
After 48,2 days the amount of Th-234 will be 25 g.
United States has thorium reserves of approx. 160 000 t.
The concentration of thorium in bitumen can vary depending on the source, but typically it is found in trace amounts. Studies have shown that thorium levels in bitumen are generally low and not considered a significant environmental or health risk.
One-half of the original amount. That's precisely the definition of "half-life".
When not mixed with clay, about 0.02% (depending on the type of thorium compound)of ingested Thorium is absorbed into the body but since Thorium is strongly adsorbed by clay, the absorption of ingested Thorium mixed with clay soil is negligible, much less than 0.02%.
After 10 days, 1/2 of the original isotope will remain since its half-life is 5 days. This means 6kg of the original isotope will remain after 1 half-life, which remains the same after 10 days since another half-life has passed.