Energy is absorbed in the reaction
M₁ x V₁ = M₂ x V₂
2.5 x V₁ = 0.50 x 100.0
2.5 x V₁= 50
V₁ = 50 / 2.5
V₁= 20 mL
hope this helps!
It doesnt really depend on the number of electrons that are valence, it depends on the group in the periodic table but most likely 2
The cause of the earths magnetic field is generated from deep down in the core of the earth.
Hello!
Vinegar would be most effective in dissolving the deposits of Hard Water.
Vinegar (CH₃COOH) is a weak acid, while Calcium Carbonate (CaCO₃), being the salt of a weak acid, will be a weak base. These two compounds will react together in the following way:
2CH₃COOH + CaCO₃ → (CH₃COO)₂Ca + H₂CO₃
H₂CO₃ reacts further to yield Water and CO₂
H₂CO₃ → H₂O + CO₂(g)
So, vinegar would be effective at dissolving CaCO₃, and we should see bubbles as a proof that a reaction has occurred.
Have a nice day!
