The water from inside the test tube most likely came from the blue copper sulfate crystal which is a hydrated salt.
<h3>Hydrated salts</h3>
Hydrated salts contain water of hydration.
A blue copper sulfate crystal contains water of hydration.
When heated, the water evaporates off to give an anhydrous salt which appears colorless.
The equation of the reaction is as follows:
CuSO4•5H2O -----> CuSO4 + 5H2O(g)
More on water of hydration can be found here: brainly.com/question/919417
In combustion energy is released so it is an exothermic process !!
the answer is 2nd one !!
125 mile *1gallon/35 mi = 135/35 = (27/7) gallon gasoline
27/7 gallon * 1 L/0.264 gallon = 14.6 L gasoline
14.6 L gasoline * 2.5kg CO2/1L gasoline= 36.5 kg CO2
36.5 kg CO2 * 1lb/0.454 kg = 80.4 lb
Answer: 80.4 lb CO2
<span>Movement of water from an area of lower solute concentration to an area of higher solute concentration</span>
