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Snowcat [4.5K]
3 years ago
6

Bismuth-212 has a half-life of 60.5 minutes. Find the amount of bismuth-212 left from a 100-gram sample after 242 minutes

Mathematics
1 answer:
amid [387]3 years ago
5 0

Notice that 242 = 4*60.5. This means after 242 minutes, the sample decays to \dfrac1{2^4}=\dfrac1{16} of its original amount. So you end up with

\dfrac{100\,\mathrm g}{16}=\boxed{6.25\,\mathrm g}

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Step-by-step explanation:

System

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4 0
3 years ago
Line FG contains points F (3,7) and G (-4,-5) line HI contains points (-1,0) and I (4,6) lines FG and HI are. ?
ludmilkaskok [199]
FG : (3,7)(-4,-5)
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now we sub, we r looking for b, the y int
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7 = 36/7 + b
7- 36/7 = b
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HI : (-1,0)(4,6)
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7 0
2 years ago
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sergiy2304 [10]
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Step by step:
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4 0
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REY [17]

Answer:

1/2

Step-by-step explanation:

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