![subject](/tpl/images/cats/himiya.png)
Chemistry, 20.11.2020 21:50 estefaniapenalo
Find the weighted average for the three following isotopes: Isotope 1: mass = 80 amu, percent abundance dance=30\% Isotope 2: mass = 60 amu, percent 1dance=40\% Isotope 3: mass = 85 amu, percent abundance 1dance=30\%
![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 02:30
The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 05:30
Choose all the answers that apply. as ocean depth increases, temperature decreases temperature increases pressure increases pressure decreases salinity increases density increases
Answers: 2
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 22:00
Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope
Answers: 1
You know the right answer?
Find the weighted average for the three following isotopes: Isotope 1: mass = 80 amu, percent abunda...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 22.03.2021 22:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2021 22:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2021 22:00
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.03.2021 22:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2021 22:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 22.03.2021 22:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.03.2021 22:00
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2021 22:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 22.03.2021 22:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2021 22:00