![subject](/tpl/images/cats/himiya.png)
![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)
Chemistry, 21.06.2019 22:30
Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 10:00
Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.
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, 23.06.2019 04:00
How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj
Answers: 1
You know the right answer?
If the pressure, volume, and the number of moles of a gas are known, which is needed to calculate th...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 10.04.2020 05:35
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.04.2020 05:36
![question](/tpl/images/cats/mat.png)
Mathematics, 10.04.2020 05:36
![question](/tpl/images/cats/biologiya.png)
Biology, 10.04.2020 05:36
![question](/tpl/images/cats/mat.png)
Mathematics, 10.04.2020 05:36
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.04.2020 05:36
![question](/tpl/images/cats/istoriya.png)
History, 10.04.2020 05:36
![question](/tpl/images/cats/mat.png)
Mathematics, 10.04.2020 05:36
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 10.04.2020 05:36
![question](/tpl/images/cats/mat.png)
Mathematics, 10.04.2020 05:36
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 10.04.2020 05:36
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/en.png)
English, 10.04.2020 05:36