100 points
Please help with this puzzle
no random answers
...
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 20:30
In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 11:50
Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?
Answers: 3
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 16:50
What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume
Answers: 2
You know the right answer?
Questions
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 20.11.2019 03:31
![question](/tpl/images/cats/mat.png)
Mathematics, 20.11.2019 03:31
![question](/tpl/images/cats/fizika.png)
Physics, 20.11.2019 03:31
![question](/tpl/images/cats/mat.png)
Mathematics, 20.11.2019 03:31
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fr.png)
![question](/tpl/images/cats/istoriya.png)
History, 20.11.2019 03:31
![question](/tpl/images/cats/mat.png)
Mathematics, 20.11.2019 03:31
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 20.11.2019 03:31
![question](/tpl/images/cats/istoriya.png)
History, 20.11.2019 03:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 20.11.2019 03:31
![question](/tpl/images/cats/health.png)
Health, 20.11.2019 03:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)