Answer:
2835 J
Explanation:
Take the specific heat capacity of water as 4.2 J/ g°C.
Energy (heat) = mass x specific heat capacity x change in temperature
(E= mcΔT)
E = 27 x 4.2 x (45-20)
E = 2835 J
Here is your answer
Ru(MnO4)2
We know that
valency of Ru=2
Valency of permanganate(MnO4)= 1
So, on combining the two
Ru(MnO4)2 is obtained by transferring of electrons.
HOPE IT IS USEFUL
Answer:
Paraffin > Heptadecane > Hexane > 2,2-dimethylbutane > Propane
Explanation:
It must first be establish that all the molecules listed in the question are alkanes. For alkanes, the intermolecular forces between the molecules of alkanes increases with increasing molecular weight. This is as a result of increase in the surface area of the molecule. Increase in surface area implies a greater degree of dispersion forces.
This is the reason why high boiling points are observed for high molecular weight alkanes.
A solution
Explanation: A solution is always transparent, light passes through with no scattering from solute particles which are molecule in size.
