Answer:
D- Assertion is false and Reason is true
Explanation:
Precipitation is said to have occurred when an insoluble product is formed from soluble ones. Let us take an instance;
BaCl2(aq) + H2SO4(aq) -------> BaSO4(s) + 2HCl(aq)
The barium sulphate so formed is an insoluble product obtained from the reaction of soluble barium chloride and sulphuric acid. This is a typical example of a double replacement reaction as the both ions exchanged partners.
Thus, the assertion is false but the reason is true.
Answer:
Value = 1.80 g/cm³ (Approx)
Explanation:
Given:
Computation:
Value = 1.80 g/cm³ (Approx)
M(NaOH)=15 g
v=600 ml=0.6 l
n(NaOH)=m(NaOH)/M(NaOH)
C=n(NaOH)/v=m(NaOH)/[M(NaOH)v]
C=15g/[40g/mol*0.6 l]=0.625 mol/l
0.625M
[H⁺]=7.5*10⁻²
pOH=14-pH=14+lg[H⁺]
pOH=14+lg(7.5*10⁻²)=14-1.125=12.875
Well for one, A LOT of heat (or if you wanna call it energy) is being released from the mixture and the container itself starts to heat up and you can DEFINITELY feel the heat. EXO: Outside, exterior. THERMIC: Heat, something to describe hot stuff (I guess).
SO you can say it heats up the outside container and occasionally will produce steam or foam (DEPENDING ON WHAT YOU MIX)
In hair dryer,
A part of electrical energy is converted to Heat energy and a major part of it is converted to mechanical energy in the form of rotation of the blades at high speed.
