Question

The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 150 grams of a radioactive isotope, how much will be left after 6 half-lives?

Answer 1

@iGreen @Makayla_scvcs @marylou004 @Warriorz13 @BloomLocke367 @Data_LG2 @DullJackel09 @Warriorz13

Answer 2

What do you think?

Answer 3

@Kb1997 Sir plz show your working

Answer 4

Sir it's mathematics Section, Please post the question in Chemistry Section.

Answer 5

@Kb1997 Plz Sir

Answer 6

@Kb1997 Do you get the concept of half-life?

The question makes it so technical.

What it really means is that after one half-life has passed, there'd only be half as much of the substance left... got it so far?

Answer 7

I just don't know how to go about it in solving... like what to put @Supreme_Kurt

Answer 8

If you like, I'll put it in simpler terms :)
A half-life is simply a period of time. Like say, three years, six months, or whatever.

For a radioactive isotope, after one half-life has passed, there'll only be half of it left. While that may have just made me sound like a broken record, let's just get right to it.

There's 150 grams of our radioactive isotope. After ONE half-life passes, how much will be left? ^^

Remember, after a half-life passes, it loses HALF itself...

Answer 9

@Kb1997 Stay with me here XD

Answer 10

130? @Supreme_Kurt

Answer 11

No... Where'd you even get that? XD
I said that after a half-life passes, it loses half itself.

Now.. what's half of 150?

Answer 12

75......I need help rounding 2.34375 to nearest gram

Answer 13

@Supreme_Kurt

Answer 14

Well then, look at the tenths digit... if it's 0, 1, 2, 3, or 4, then just remove the decimals. If it's not, then remove the decimals and add 1 to the ones digit.

Answer 15

so answer s 2.343? @Supreme_Kurt

Answer 16

I thought you were supposed to round it off to the nearest gram, though?