Answer:
Yes, it underwent a chemical change
Explanation:
<u>Answer:</u>
<em>54.9 mg of the radioisotope are still active after 110 min.</em>
<u>Explanation:</u>
Half-life of F-18 is found to be 109.7 minutes
Rate constant
t = time taken = 110 minutes
[A] is the final quantity
is the initial quantity
Plugging the values and solving for [A]
[A] = 54.9 mg is the Answer
Answer:
How many moles of oxygen are in 2.71 x 1025 molecules of carbon dioxide (CO2)? 90 moles. How many moles are there in 125 grams of carbon? 10.42 moles of carbon.
Explanation:
Answer:
How to convert 45 gal to kg? You can use the following formula to convert from Gallon to Kilograms :
X(kg) = y(gal) / 0.264172053
To convert 45 Gallon to Kilograms:
X(oz) = 45(gal) / 0.264172053
Answer: 170.3435 kg