cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium. i hope you have fun reading that

5 0

4 years ago

Read 2 more answers

What do chemists mean by a driving force

garik1379 [7]

The factors responsible for causing a reaction to go to completion.

7 0

4 years ago

radioisotope actinium 225 has half life of 10 days, I begin with 16 kg of this isotope, how much will remain after 40 days?

Igoryamba

$N(t)=N_{0}(\frac{1}{2})^\frac{t}{\tau_{_\frac{1}{2}}}}\\\\
N_{0}=16kg\\
t=40days\\
\tau_{_\frac{1}{2}}}=10days\\\\\\
N(t)=16kg*(\frac{1}{2})^{\frac{40}{10}}=16kg*\frac{1}{16}=1kg$

3 0

3 years ago

6. A 50-year-old sample of Strontium-90 is found. The half-life of strontium is 29

Gnesinka [82]

Answer:

the sample has mass of 50mg initially

Explanation:

https://youtu.be/ietdukGMG5c

8 0

3 years ago