A student heated a blue copper sulfate crystal in a test tube. After a few minutes, she observed that the crystal turned white a nd the inside of the test tube was covered with a thin film of water. The water inside the test tube most likely __.
1 answer:
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
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Answer:
B??? sorry if im wrong
Explanation:
Answer:
382.5J
Explanation:
<em>Use the formula:</em>
E = mcΔθ or Q = mcΔT
m = 100g
c = 0.45 J/g°C
ΔT or Δθ = 110 - 25 = 85°
<em>Sub in the values:</em>
E = 100 × 0.45 × 85
= 382.5J
Answer:
D: lose an electron
Explanation:
when an atom loses an electron it's positively charged and when it gain an electron it is negatively charged
The answer for it is C. when you mix it with water it fizzes
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