Chemistry, 08.12.2021 05:10 cedarclark9534
What is the difference between nitrogen monoxide and dinitrogen pentoxide? Why are prefixes used in this situation?
Answers: 1
Chemistry, 21.06.2019 16:00
Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25Β°c to 33Β°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170Β°c to -200Β°c. the methane freezes and the nitrogen . when gold is heated to 2,856Β°c it changes from a liquid to a .
Answers: 2
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 19:00
Nan elementβs square on the periodic table, the number with the greatest numerical value represents the
Answers: 3
What is the difference between nitrogen monoxide and dinitrogen pentoxide? Why are prefixes used in...
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