The original material has decayed 75%
<h3>Further explanation</h3>
Given
two half-life
Required
The decayed sample
Solution
General formulas used in decay:
t = duration of decay
t 1/2 = half-life
N₀ = the number of initial radioactive atoms
Nt = the number of radioactive atoms left after decaying during T time
t = 2 x t 1/2
Input the value :
The amount of Nt = 25% No
Answer:
Sorry im too d*mb for dis i shall be back an asnwer soon :3
Explanation:
:3
675 nanograms is equivalent to 6.75 × 10-⁴ milligrams.
<h3>How to convert nanograms to milligrams?</h3>
Nanograms is a unit of mass equal to 0.000000001 grams and has a symbol of ng.
On the other hand, milligrams is another unit of mass equal to 0.001grams and has a symbol of mg.
Nanograms and milligrams are both units of mass and can be inter-convertible as follows:
1 nanogram = 1 × 10-⁶ milligram
According to this question, 675 nanograms is equivalent to 675 × 10-⁶ milligrams.
Therefore, 675 nanograms is equivalent to 6.75 × 10-⁴ milligrams.
Learn more about milligrams at: brainly.com/question/20320382
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<span> 3.)What is the total number of moles of oxygen atoms present in one mole of Mg(ClO3)2? 5,2,3,or 6?
Thats the question right? the answer is 6
</span>
Answer:
i believe the answer is number of hours because independent variable is what the experimenter changes or controls
