![subject](/tpl/images/cats/himiya.png)
Chemistry, 28.06.2019 20:30 littlemrslazy
What is the half life isotope if after 21 days you have 31.25 g remaining from a 250.0 g starting sample size?
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 07:20
2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 18:00
Heat is the total potential energy of a substance that can be transferred. true false
Answers: 1
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 19:50
When the mercury level in a barometer decreases that atmospheric pressure has
Answers: 3
You know the right answer?
What is the half life isotope if after 21 days you have 31.25 g remaining from a 250.0 g starting sa...
Questions
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2021 01:00
![question](/tpl/images/cats/istoriya.png)
History, 07.12.2021 01:00
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 07.12.2021 01:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 07.12.2021 01:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 07.12.2021 01:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/en.png)
English, 07.12.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2021 01:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 07.12.2021 01:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2021 01:00