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Nimfa-mama [501]
3 years ago
10

a radioactive tracer has a half-life of 2 hours. how much of a 2500g sample will be avalible after 18 hours

Physics
1 answer:
zhannawk [14.2K]3 years ago
8 0

Answer:

i believe the answer is 2.44140625 grams remaining

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This is “Fusion Reactions”.<br> Please answer number 8. Thank you.
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Answer:

²₁H + ³₂He —> ⁴₂He + ¹₁H

Explanation:

From the question given above,

²₁H + ³₂He —> __ + ¹₁H

Let ⁿₐX be the unknown.

Thus the equation becomes:

²₁H + ³₂He —> ⁿₐX + ¹₁H

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Collect like terms

n = 5 – 1

n = 4

For a:

1 + 2 = a + 1

3 = a + 1

Collect like terms

a = 3 – 1

a = 2

For X:

n = 4

a = 2

X =?

ⁿₐX => ⁴₂X => ⁴₂He

Thus, the balanced equation is

²₁H + ³₂He —> ⁴₂He + ¹₁H

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Would the springs inside a bathroom scale be more compressed or less compressed if you weighed yourself in an elevator that was
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