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A Sample of gas originally

a sample of radioactive iodine (half life=3 days) originally weighed 10 g, but now weighs 0.625 g. How old is the sample?
1. 2 answers
2. asked by Valerie
3. 1,029 views
Assuming that the temperature and quantity of a gas sample remain constant, what will be the final pressure of 1.6 L sample of
1. 1 answer
2. asked by sam
3. 1,351 views
A sample originally contained 2.5 g of rubidium 87 now contains 1.25 g. The half life of rubidium - 87 is 6 x 10 ( to the 10th)
1. 2 answers
2. asked by sam
3. 697 views
What is the temperature, at thermal equilibrium, when a 2.55 g sample of cream, originally at 3.89 degrees Celsius, is added to
1. 1 answer
2. asked by Nadia
3. 50 views
A mixture of BaCl2.2H2O (FM244.26) and K2SO4 (FM 174.26) is heated at 160C for an hour, causing the water molecules to leave. A
1. 1 answer
2. asked by Asuna
3. 679 views
Which of the following statements about the two sample sizes is NOT true? Assume thepopulation standard deviations are equalA.
1. 0 answers
2. asked by arelis
3. 692 views
At what temperature (oC) will a gas sample occupy 9.8 L if it originally occupies 14.2 L at 25.9oC?
1. 1 answer
2. asked by Sven
3. 514 views
At what temperature (oC) will a gas sample occupy 6.1 L if it originally occupies 17.8 L at 27.1oC?
1. 1 answer
2. asked by kellie
3. 447 views
at what temperature will a gas sample occupy 6.6L if it originally occupies 14.1L at 14.4 degrees celcius
1. 1 answer
2. asked by cindy
3. 411 views
At what temperature (oC) will a gas sample occupy 6.1 L if it originally occupies 17.8 L at 27.1oC?I did (v1/t1)=(v2)/(t2)
1. 1 answer
2. asked by kellie
3. 455 views