Chemistry, 10.10.2019 01:40 school4life110
Carbon-14 has a half-life of 5720 years and this is a first order reaction. if a piece of wood has converted 25% of the carbon-14, then how old is it?
Answers: 1
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 09:20
Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?
Answers: 3
Chemistry, 22.06.2019 15:30
The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll
Answers: 1
Chemistry, 22.06.2019 16:30
4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:
Answers: 1
Carbon-14 has a half-life of 5720 years and this is a first order reaction. if a piece of wood has c...
Social Studies, 18.01.2021 03:00
Arts, 18.01.2021 03:00
Computers and Technology, 18.01.2021 03:00
History, 18.01.2021 03:00
Social Studies, 18.01.2021 03:00
Mathematics, 18.01.2021 03:00
Mathematics, 18.01.2021 03:00
Health, 18.01.2021 03:00
Mathematics, 18.01.2021 03:00
Mathematics, 18.01.2021 03:00
Social Studies, 18.01.2021 03:00
Biology, 18.01.2021 03:00