Please help !! thank you
...
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 07:30
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 13:30
How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 13:30
Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?
Answers: 3
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 03.09.2020 08:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 03.09.2020 08:01
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 03.09.2020 08:01
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/istoriya.png)
History, 03.09.2020 08:01
![question](/tpl/images/cats/en.png)
English, 03.09.2020 08:01
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/himiya.png)
Chemistry, 03.09.2020 08:01
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 03.09.2020 08:01
![question](/tpl/images/cats/fizika.png)
Physics, 03.09.2020 08:01