Apr 13, 2015 · Radioactive dating uses the concept of half life to determine the age of something. The general idea is that elements exist naturally as a combination of isotopes. Some isotopes …

Mar 3, 2016 · A radio-active isotope will lose radio-activity at a certain rate. The time it takes to lose half its activity is called the half-life. So every half-life period (t_(1/2)) the activity halves …

Jan 4, 2017 · Radioactive dating is not important in providing evidence for evolution. Radioactive dating can only provide indirect evidence for evolution. Radioactive dating can provide …

Jan 11, 2016 · Simply put, in one nuclear half-life, half of the atoms in the initial sample undergo radioactive decay and the other half do not. Since the problem doesn't provide the nuclear half …

Mar 15, 2015 · To determine the half-life of this reaction, replace t with t1/2 and [A] with [A]0 2 in the above equation. (Remember that, by definition, the reaction's half-life is the time needed …

Jul 22, 2015 · [X]=0.15"M" If you plot a concentration time graph you get an exponential curve like this: This suggest a first order reaction. I plotted the graph in Excel and estimated the half-life. …

What are two radioactive isotopes of oxygen?Oxygen-15 and oxygen-13.

Jul 15, 2016 · A large city is growing by at rate of 0.8% annually. If there were 3,390,000 residents of the city in 1992, predict how many will be living in the city in 1997?

May 4, 2017 · To understand why this makes sense, let's expand the function that is given. To do this, we need to keep in mind two properties of exponents: First, (a b)x = ax bx Second, a−x = …

Oct 5, 2016 · A colony of bacteria grows according to the law of uninhibited growth. If 100 grams of bacteria are present initially and 250 grams are present after two hours, how many will be …