![subject](/tpl/images/cats/himiya.png)
For the element X, 2 isotopes exist. Atoms with an atomic mass of 10.012 amu occur in 19.91% of natural samples. Atoms with an atomic mass of 11.009 amu occur in 80.09% of natural samples. What is the atomic mass of element X?
10.51 amu
10.51 amu
1081.05 amu
1081.05 amu
10.511 amu
10.511 amu
10.81 amu
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 18:30
Which of the following words describe the reality that the universe looks the same from various perspective
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 22:30
What must be in balance for temperatures to remain constant?
Answers: 1
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 07:10
Which one of the following is an oxidation-reduction reaction? naoh + hno3 --> h2o + kno3 naoh + hno3 --> h2o + kno3 so3 + h2o --> h2so4 cacl2 + na2co3 --> caco3 + 2 nacl ch4 + 2 o2 --> co2 + 2 h2o al2(so4)3 + 6 koh --> 2 al(oh)3 + 3 k2so4
Answers: 3
You know the right answer?
For the element X, 2 isotopes exist. Atoms with an atomic mass of 10.012 amu occur in 19.91% of natu...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 22.02.2021 17:20
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.02.2021 17:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.02.2021 17:20
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.02.2021 17:20
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.02.2021 17:20
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.02.2021 17:20
![question](/tpl/images/cats/istoriya.png)
History, 22.02.2021 17:20
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.02.2021 17:20
![question](/tpl/images/cats/mat.png)
Mathematics, 22.02.2021 17:20
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.02.2021 17:20
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.02.2021 17:20