Chemistry, 10.03.2021 23:00 trinidymwilga
Question 8 (1 point) 2H₂ + O₂ O2 --> 2 H20 Molar mass of H2 = 2.0 O2 =32.0 H2O=18.0 If you start with 20 grams of Oz, how many moles of H2O can be made? 1.25 mol 320 mol 1280 mol 0.31 mol Question 9 (1 point)
Answers: 1
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 05:30, alaynagrace1111
What is the mass of each element in a 324.8 sample of co2
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Chemistry, 22.06.2019 06:00, Kjswagout5052
In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit
Answers: 2
Chemistry, 22.06.2019 12:30, fvmousdiana
In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)
Answers: 3
Question 8 (1 point) 2H₂ + O₂ O2 --> 2 H20 Molar mass of H2 = 2.0 O2 =32.0 H2O=18.0 If you start...
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