(3) the water to the ice cubes
This is so because the ice cubes are colder compared to their surrounding objects.
They absorb the heat from the water, cooling it, therefore vanishing(melting).
The answer is never because there's no electricity
The 3% mass/volume H₂O₂ means 3 g of H₂O₂ in 100 ml of water.
Now, Molarity (M) = No. of moles of H₂O₂ / Volume of solution in liter
No. of moles of H₂O₂ = Mass / Molar mass = 3 g / 34 g/mol = 0.088 mol
So, molarity = 0.088 × 1000 ml / 100 ml = 0.88 M
In case of 2.25 % H₂O₂,
No of moles = 2.25 g / 34 g/mol = 0.066 mol
Molarity = 0.066 mol / 0.100 L = 0.66 M.
Answer:
See Explanation
Explanation:
An electrolyte is a solution which is able to conduct electricity. An electrolyte conducts electricity because of the presence of ions which move around in the solution.
Ba(OH)2 and H2SO4 are composed of ions; these ions are the charge carriers in solution and are responsible for the conductivity of the solution and the glow of the bulb.
When Ba(OH)2 and H2SO4 are mixed, the following reaction occurs;
Ba(OH)2(aq) + H2SO4(aq) -------->BaSO4(s) + 2H2O(l)
The formation of the BaSO4(s) precipitate removes the ions that are responsible for the conductivity of the solution hence the light bulb of the conductivity apparatus dims and eventually fades completely.
Answer:
.
Explanation:
Eardrum or tympanic membrane changes sound to vibration and pass through malleus, incus and stapes.