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MrRissso [65]
3 years ago
11

Technetium-99 is an ideal radioisotope for scanning organs because it has a half-life of 6.0 h and is a pure gamma emitter. supp

ose that 80.0 milligrams were of tc-99 were prepared at 6:00 am, how many milligrams of tc-99 would remain at 6:00 pm the same day? make sure to include units in your answer.
Chemistry
1 answer:
Nadusha1986 [10]3 years ago
3 0

Answer: 20 mg Te-99 remains after 12 hours.

Explanation:  N(t) = N(0)*(1/2)^(t/t1/2)

                        N(t) = (80 mg)*(0.5)^(12/6)

N(t) = 20 mg remains after 12 hours

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A car's fuel efficiency is 39.0 miles per gallon. What is its fuel efficiency in kilometers per liter? (1.6094 km=1 mile)(1 gall
MrRa [10]

Answer:

the fuel efficiency in kilometers per liter is 16.561 kilometer per liter

Explanation:

The computation of the full efficiency in kilometers per liter is shown below:

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Now cut the opposite miles and gallons

So, the fuel efficiency would be

= 16.561 kilometers per liter

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3 years ago
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4 0
3 years ago
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6 0
4 years ago
Which one has more mass a bag of cotton balls or a bag of nails and explain
Mama L [17]
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6 0
3 years ago
Which of these elements has two electrons in its outer p orbitals?
ivanzaharov [21]

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Explanation:

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4 0
3 years ago
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