Answer:
= 25 g
Explanation:
Using the formula;
A = A₀ (1/2)^(t/h)
where A is the final amount,
A₀ is the initial amount of the substance,
t is the time and
h is the half-life of the substance,
In this case; the half life of U-238 h is equal to 4.47 billion years.
A = A₀ (1/2)^(t/h)
A = 50 (1/2)^(4.5 / 4.47)
= 24.88
<u> = 25 g</u>
Answer:
Chromatography involves solvent separation on a solid medium. Distillation takes advantage of differences in boiling points. Evaporation removes a liquid from a solution to leave a solid material. Filtration separates solids of different sizes.
Explanation:
give brainliest
Answer: true
Explanation:
we will need to start using clean resources for our environment will collapse
Answer:
Cyanobacterium
Explanation:
“Cyanobacterium” is the correct answer, as it has the kingdom bacteria in its name.
Answer:
they must know the fountion of the equipment
Explanation:
because without knowing the fountion of the equipment, you will always get a wrong or a different conclusion
