When a liquid absorbs heat energy without increasing its temperature is because it is using the absorbed heat for the change of phase from liquid to vapor. This is call vaporization. Vaporization requires energy because the molecules have to overcome the interaction that keeps them close to their neighbors in the liquid.So, <span>the answer is the option B.) it vaporizes.</span>
It's known as "<span>ionization energy</span><span>", I believe. </span>
Mass of copper : 0.165 g
<h3>Further explanation</h3>
Given
5.0 A over 100 seconds
Required
Mass of copper
Solution
Faraday's law:
<em>The mass of the substance formed at each electrode is proportional to the electric current flowing in the electrolysis</em>
<em />
<em />
e = Ar / valence = eqivalent weight
i = current
t = time
W = weight
CuSO₄ ----> Cu²⁺ + SO₄²⁻
Cu ----> Cu²⁺ + 2e
e = Ar/2
= 63,5/2 = 31,75
Answer:
5.33 mol/L.
Explanation:
Its density is 1.3057 g/ml so in a liter (1000 mL) there is 1305.7 g of solution, but only 40% is sulfuric acid.
0.40x1305.7=522.28
So in a liter of 40% sulfuric acid solution there is 522.28 g of sulfuric acid.
Sulfuric acid molar mass iss 98.079 g/mol, so in 522.28 g of sulfuric acid there is
522.28 g /98.079 g/mol=5.33 mol
In one liter of solution there is 5.33 mol of sulfuric acid, so the molarity of such solution is 5.33 mol/L.
Answer:
1.D
2.C
3.A
4.D
5.D
Explanation:
I just thought na it's the answer
