half life: 1620, initial quantity:x, amount after 1000 years:1.5 g I need to solve for the initial quantity with the info given, thx for the help
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Originally Posted by theman half life: 1620, initial quantity:x, amount after 1000 years:1.5 g I need to solve for the initial quantity with the info given, thx for the help we use the equation where is the rate of decay, is the amount at time , is the intial amount (what we are searching for). now, you know the half-life, so you can find . once you have . plug in , , and whatever. and solve for
thanks, but i still dun know how to solve for the rate of the decay...
Originally Posted by Jhevon now, you know the half-life, so you can find . Originally Posted by theman thanks, but i still dun know how to solve for the rate of the decay... You can't solve that equation for r?? -Dan
lol, sorry, im kinda stupid, but i just solved it thanks!
um, sorry, but one more thing. With the same info and the initial quantity i got was 2.3 g. How would u solve it for 10,000 years.
Originally Posted by theman um, sorry, but one more thing. With the same info and the initial quantity i got was 2.3 g. How would u solve it for 10,000 years. You have and r. Just plug in t = 10000 years. -Dan
Originally Posted by theman half life: 1620, initial quantity:x, amount after 1000 years:1.5 g I need to solve for the initial quantity with the info given, thx for the help double posts .
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