![subject](/tpl/images/cats/himiya.png)
Chemistry, 07.09.2021 18:30 TrudnEli9904
Tellurium consists of 3 common isotopes. Half of tellurium atoms have a mass of 127, and another 0.45 of tellurium atoms weigh 128. What is the mass of the remaining isotope? The atomic mass of tellurium is 127.6.
A) 126
B) 127
C) 129
D) 130
E) 131
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:00, VamPL
Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl +4h2o enter the elemental symbol. view available hint(s) is reduced
Answers: 1
You know the right answer?
Tellurium consists of 3 common isotopes. Half of tellurium atoms have a mass of 127, and another 0.4...
Questions in other subjects:
![Konu](/tpl/images/cats/obshestvoznanie.png)
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 24.04.2020 20:08
![Konu](/tpl/images/cats/istoriya.png)
History, 24.04.2020 20:08
![Konu](/tpl/images/cats/mat.png)
Mathematics, 24.04.2020 20:08
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 24.04.2020 20:08
![Konu](/tpl/images/cats/mat.png)