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How Many Halflife Are These In A 100-year Span How Many Grams Of The Sample Would Remain At The End Of The 100 Years?
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How many grams remain after 20 years?
100 grams
How many grams and moles are in Bismuth?
Depends on how much of the sample there is.
If 12.5 grams of the original sample of cesium-137 remained after 90.69 years what was the mass of the original sample?
100g
If you have 6.02 x 1023 molecules of H2O. What is the mass of this sample?
18 grams
How many grams of Ti are found in a 0.65 mole sample?
The gram atomic mass of titanium is 47.867. Therefore, in a 0.65 mole sample, there will be 0.65 X 47.867) = 31 grams, to the justified number of significant digits.
How much of an 800-gram sample of potassium-40 will remain after 3.9109 years of radioactive decay?
100 grams
How many milligrams of a 15.0 mg sample of radium-226 remain after 6396 years if the half-life of radium-226 is 1599?
One sixteenth of a gram. 1st halflife- 1/2 gram 2nd, 1/4 3rd 1/8th 4th halflife, 1/16th
How much of an 800-gram sample of potassium-40 will remain after 3.9 X 109 years of radioactive decay?
100 grams
The half-life of actinium 227 is 21.772 years After 50 years how much of a 1500 g sample will remain radioactive?
Approx. 313 grams
How many grams of a 250-g sample of thorium-234 would remain after 40 days had passed?
79 grams <><><><><> AT = A0 2 (-T/H) AT = 250 2(-40/24.1) AT = ~79
How many grams is 56.8 grams?
a metal sample weigs 56.8 gramsHow many ounces does this sample weigh?
How much of one gram of radium-226 will remain unchanged after four half-lives?
After each half-life, half of the radium-226 will decay. Therefore, after four half-lives, 1/2^4 or 1/16th of the original gram of radium-226 will remain unchanged. This means that 1/16th of a gram, or 0.0625 grams, will still be unchanged after four half-lives.
How many grams does a 0.0233 kg sample contain?
23.3 grams
A sample of 0.53 grams of an ore contains 5.4 percent silver How many milligrams of pure silver are in the sample?
Approx 28.6 grams.
How many grams remain after 20 years?
100 grams
The mass of Denise's rock sample is 684 grams. The mass of Pauline's rock sample is 29,510 centigrams. How much greater is the mass of Denise's sample than Pauline's sample?
"centi" is 100. 1 centigram is 100 grams, so Denise's sample is 68,400 centigrams. 68400 - 29510 = 38890 centigrams or 388.90 grams.
A 10 ml sample of a substance has a mass of 20 grams what would be the mass of a 200 ml sample of the same substace?
The second sample is 200/10 = 20 times as large. So its mass will be 20 times as great ie 20*20 grams = 400 grams.
