Chemistry, 12.02.2020 02:04, bugsbunny27
What volume of water at 0 ∘C∘C can a freezer make into ice cubes in 2.0 hh , if the coefficient of performance of the cooling unit is 9.0 and the power input is 1.2 kilowatt?
Answers: 3
Chemistry, 21.06.2019 20:30, nmadrigal
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 12:50, martinez6221
What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate
Answers: 1
What volume of water at 0 ∘C∘C can a freezer make into ice cubes in 2.0 hh , if the coefficient of p...
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