All categories

1 year ago

The half-life of the radioactive isotope magnesium-20 is 0.600 seconds.

Chemistry

2 answers:

nataly862011 [7]1 year ago

6 0

The time taken for the radioactive sample to decay is 1.8 s.

The half life is the time taken for only half of the number of the radioactive isotopes to remain. Now we have;

No = 65.6 micrograms

N = 8.20 micrograms

t1/2 = 0.600 seconds

t = ?

Hence;

N/No = (1/2)^t/t1/2

8.20/ 65.6 = (1/2)^t/0.600

0.125 = (1/2)^t/0.600

1/8 = (1/2)^t/0.600

(1/2)^3 = (1/2)^t/0.600

3 = t/0.600

t = 3 * 0.600

t = 1.8 s

Learn more about half life:brainly.com/question/24710827

#SPJ1

Afina-wow [57]1 year ago

3 0

It will take less 1.8 seconds for the mass of a sample of magnesium-20 to decay from 65.6 micrograms to 8.20 micrograms.

<h3>What is Half-Life of radioactive a radioactive substance?</h3>

The half-life of a radioactive element is the time for half the amount of a sample of the substance to decay.

After 0.6 seconds 31.25 remains

After 1.2 seconds, 15.625 remains

After 1.8 seconds, 7.9 micrograms remains.

In conclusion, it will take less 1.8 seconds for the sample to decay to 8.20 micrograms.

Learn more about Half-Life at: brainly.com/question/2320811

#SPJ1

You might be interested in

In a metal what is not given an assigned location and thus can drift

Allushta [10]

In a metal, "Electrons" <span> is not given an assigned location and thus can drift

In short, Your Answer would be Option C

Hope this helps!</span>

6 0

2 years ago

What cell part is NOT found in all cells?

elena-s [515]

Answer:

heart I think also I'm so sorry if I get you this wrong I think membrane not sure tell me what was the right answer but I think membrane.

3 0

3 years ago

Most radiation exposure comes from A. consumer products. B. nuclear medicine. C. medical X-rays. D. natural sources.

Verizon [17]

The answer is B) nuclear medicine

5 0

3 years ago

Read 2 more answers

How much heat is lost when 1277 g of H20 at 400 K is changed into ice at 263 K? Plz help I’ll give you brainliest 20 points

OLga [1]

The heat lost is $-7.32*10^-^5J$

The heat lost when the ice is cooled from 400k to 263K can be calculated using the formula of heat transfer.

<h3>Heat Transfer</h3>

This is the heat transferred from a body of higher temperature to a body of lower temperature.

$Q = mc(\delta)T$

Q = Heat Transfer
m = mass = 1277g
ΔT = change in temperature

$\delta T = (400 - 273) - (263 - 273) = \\
\delta T = T_2 - T_1\\
\delta T = -10 - 127\\
\delta T = -137^0C$

We converted the temperature from kelvin scale into Celsius scale and find the change in temperature.

Solving for heat transfer

$Q = mc\delta T\\
Q = 1277 * 4.186 * -137\\
Q = -732336.514J$

The heat loss is approximately $-7.32*10^-^5J$

Learn more on heat transfer here;

brainly.com/question/16055406

6 0

2 years ago

How are scientific questions answered?

Katena32 [7]

Answer:

They're answered by having an equation and the some symbols with it to make the answer more correct.

4 0

3 years ago