![subject](/tpl/images/cats/himiya.png)
Chemistry, 12.03.2021 02:00 MegRasmussen31
Which element has a lower ionization energy: Ca or Ra? Why?
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 07:00
Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 12:00
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 21:20
40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 00:30
When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?
Answers: 3
You know the right answer?
Which element has a lower ionization energy: Ca or Ra? Why?...
Questions
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/health.png)
Health, 06.07.2019 20:00
![question](/tpl/images/cats/fizika.png)
Physics, 06.07.2019 20:00
![question](/tpl/images/cats/mat.png)
Mathematics, 06.07.2019 20:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fizika.png)
Physics, 06.07.2019 20:00
![question](/tpl/images/cats/istoriya.png)
History, 06.07.2019 20:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/en.png)
English, 06.07.2019 20:00
![question](/tpl/images/cats/istoriya.png)
History, 06.07.2019 20:00
![question](/tpl/images/cats/mat.png)
Mathematics, 06.07.2019 20:00
![question](/tpl/images/cats/mat.png)
Mathematics, 06.07.2019 20:00
![question](/tpl/images/cats/biologiya.png)
Biology, 06.07.2019 20:00
![question](/tpl/images/cats/mkx.png)
Arts, 06.07.2019 20:00
![question](/tpl/images/cats/mat.png)
Mathematics, 06.07.2019 20:00