Chemistry, 19.11.2020 02:50 gshreya2005
Which of these is the best evidence that a chemical reactions occurs when coal burns?
A-Coal is made up of more than one element
B-a new substance is produced
C-Oxygen is present
D-The shape of coal changes
Answers: 1
Chemistry, 22.06.2019 22:00
4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.
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Chemistry, 22.06.2019 22:00
Pls ill give u brainliest which of the following is true about science? 1. political conditions are unable to influence it. 2. economic concerns may prevent it from solving problems.
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Chemistry, 22.06.2019 23:00
What is the name of the enzyme that forms at the start of transcription?
Answers: 1
Which of these is the best evidence that a chemical reactions occurs when coal burns?
A-Coal is mad...
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