9. the largest source of radiation in most people's lives is
a. medical uses
c. industri...
![subject](/tpl/images/cats/himiya.png)
9. the largest source of radiation in most people's lives is
a. medical uses
c. industrial applications
b. natural background radiation d. nuclear weapons testing
10. a radioactive gas that enters many houses from the ground below
a. radium
b. radon
c. carbon-14
d. tritium
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:30
If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.09.2020 07:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
Physics, 20.09.2020 07:01
![question](/tpl/images/cats/istoriya.png)
History, 20.09.2020 07:01
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
English, 20.09.2020 07:01
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/health.png)
Health, 20.09.2020 07:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 20.09.2020 07:01
![question](/tpl/images/cats/istoriya.png)
History, 20.09.2020 07:01
![question](/tpl/images/cats/en.png)
English, 20.09.2020 07:01
![question](/tpl/images/cats/mat.png)
Mathematics, 20.09.2020 07:01
![question](/tpl/images/cats/mat.png)
Mathematics, 20.09.2020 07:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 20.09.2020 07:01