If four half-lives have passed, how old is a sample that contains radioactive material with a half-life of 5,730 years? If the half-life of uranium-235 is 7.04 x 10^8 y and 12.5 g of uranium-235 remain after 2.82 x 10^9 y, how much of th...
Half-life of a radioactive nuclide is defined as the average time taken for half of the original number of radioactive nuclei in a sample to decay.Or any of the following:- half of the original number of radioactive nuclei in a sample to remair undecayed;- the activity of a radioa...
The half-life period of a first order reaction is 100 sec. The rate constant of the reaction is View Solution Half life period ofC14is : - View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions KC Sinha Solutions for Maths ...
Half-Life: The half-life of a chemical species is the amount of time needed in order for the initial amount of the chemical species to be halved. This can take only seconds for some chemical species but years for others. Answer and Explanation: ...
“There is a lot of really interesting evidence which seems to be suggesting that if children are inspired up to the age of seven, then being outdoors will be on habit for life.”“有很多有趣的证据表明，如果孩子在7岁之前受到启发，那么户外活动将成为终生的习惯。”His own children have got ...
So am I. What I like about myself is mainly about my healthy life habits and good personality. To begin with, I have developed healthy life habits. For example, I never stay up so that I can focus in class. Besides, running for half an hour every day helps me keep in good heal...
Official answer: The half-life of a drug is the time it takes for the concentration of the drug in your blood plasma to decrease by...
Half a Life: An Adams Autobiography as Important for What's Said as
What is half life time and life time of a reaction ? 02:17 Calculate the rate constant of a reaction (first order) which is 90% c... 04:12 What is half time period ? A first order reaction takes 69.3 minutes f... 04:15 The rate constant of first order reaction is 0.346 min^(...
英语(一)阅读逐句精读精讲 2012 Text 1 第一段 ①Come on—Everybody’s doing it. ②That whispered message, half invitation and half forcing, is what most of us think of when we hear the words peer pr…