![subject](/tpl/images/cats/himiya.png)
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/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 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 13:30
How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123
Answers: 1
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 00:00
How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?
Answers: 3
You know the right answer?
What is the total amount of heat required to vaporize 1.00 gram of h2o(g) at 100.0c and 1 atmosphere...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 10.02.2021 23:40
![question](/tpl/images/cats/biologiya.png)
Biology, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 10.02.2021 23:40
![question](/tpl/images/cats/mat.png)
Mathematics, 10.02.2021 23:40