![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, 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 03:50
Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 06:00
What are the coefficients to balance the following equation? ba+br2=babr2
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 07:00
Why do the strengths of london (dispersion) forces generally increase with increasing molecular size? choose one: a. heavier atoms have stronger attractions for each other than lighter atoms. b. dispersion forces are all equal in magnitude; there is no size dependence. c. dispersion forces arise from the attraction between the nuclei of atoms, and larger molecules have larger nuclei. d. dispersion forces arise from dipoles caused by the electron distribution being distorted. larger molecules have more electrons and, therefore, more distortions and a bigger force. e. dispersion forces depend on distance. larger molecules are farther apart and so the forces are smaller.
Answers: 2
You know the right answer?
Will mark branliest. calculating percent yield: for the reaction cu + 2agno3 → cu(no3)2 + 2 ag, add...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 21.03.2020 03:58
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/en.png)
English, 21.03.2020 03:58
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 21.03.2020 03:58
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.03.2020 03:58
![question](/tpl/images/cats/es.png)
Spanish, 21.03.2020 03:58
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.03.2020 03:58
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 21.03.2020 03:58
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.03.2020 03:59
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
History, 21.03.2020 03:59
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)