Answers: 3
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
Chemistry, 22.06.2019 22:30
Akno3 solution containing 51 g of kno3 per 100.0 g of water is cooled from 40 ∘c to 0 ∘c. what will happen during cooling?
Answers: 3
Chemistry, 23.06.2019 01:00
Which is true concerning the products and reactants of photosynthesis and cellular respiration? a. the products of photosynthesis are sugars and the reactants of cellular respiration are starches. b. the products of photosynthesis are reactants in cellular respiration. c. oxygen is needed for photosynthesis and is given off in cellular respiration.
Answers: 2
Explain how cells can only come from pre-existing cells. How does that work ?...
English, 10.12.2020 20:30
Mathematics, 10.12.2020 20:30
Mathematics, 10.12.2020 20:30
English, 10.12.2020 20:30
Mathematics, 10.12.2020 20:30
Mathematics, 10.12.2020 20:30
Mathematics, 10.12.2020 20:30
Mathematics, 10.12.2020 20:30
Mathematics, 10.12.2020 20:30
Mathematics, 10.12.2020 20:30
Mathematics, 10.12.2020 20:30