Answer and Explanation:
The steam of bubbles moves away from the stainless steel screw in the salt solution because in salt solution the molecules of the salts break down in ion form and produce electricity.
The electricity produced by the salt ion is responsible for the movement of bubbles
On the other hand in the solution of sugar no ions are produced and hence no electricity is generated and hence no movement of bubbles.
B.Ag from the latin Argentum
Answer:
-776 KJ/mol
Explanation:
We must look towards the balanced reaction equation in order to obtain the number of electrons transferred in the redox reaction.
3Cu(s) + 2MnO4^-(aq) + 8H^+(aq)------>3Cu2+(aq) + 2MnO2(s) + 4H2O(l)
We can easily see that copper lost six electrons while Manganese gained six electrons hence n=6
ΔG =-nFEcell
Where;
n= 6
F = 96500 C
Ecell=+1.34
ΔG = -(6 * 96500 * 1.34)
ΔG = -776 KJ/mol
Solids have a solid, fixed shape, while liquids can change shape as they are put into a different container or cup. Gases also take the shape of the object they are in.
Answer:
The new volume of the gas is 21 L.
Explanation:
Volume of a gas is inversely proportional to its pressure at constant temperature such that,
or
We have,
It is required to find V₂. Using above law or Boyle's law such that :
So, the new volume of the gas is 21 L.