Given that
Mass of water = 65.34 g
Amount of heat = mass of water * specific heat (temperature change
)
= 65.34 g * 4.184 J / g-C ( 21.75-18.43 )C
= 907.63 J
= 0.908 KJ
And
1 cal = 4.186798 J
907.63 J * 1 cal / 4.186798 J =216.78 cal
Or0.218 kcal
Azeotrope is a mixture of two or more liquids whose proportions cannot be changed by simple distillation.
Explanation:
Nitic acid and water is an example of azeotrope. The composition of 68% of nitric acid and 32% of water by mass in a boiling point of 393.5k.
The composition of perchloric acid (71.6%) and water boils at 203°c. Pure iron solution weights about 10g is placed in a beaker, hydrochloric acid and nitric acid mixtures are added and heated to dissolve. Add perchloric acid until it evaporate and produces white smoke.cool it down add water and dissolve the salt.
Answer:
kujgedyjmnyged\jmngv\gedkjmyten
Explanation:
Answer: The resulting isotope is ![^{231}_{92}\textrm {U}](https://tex.z-dn.net/?f=%5E%7B231%7D_%7B92%7D%5Ctextrm%20%7BU%7D)
Explanation:
Alpha Decay: In this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. The mass number is reduced by 4 units and atomic number is reduced by 2 units.
![^{235}_{92}\textrm{U} \rightarrow ^{231}_{90}\textrm {Th}+^{4}_{2}n](https://tex.z-dn.net/?f=%5E%7B235%7D_%7B92%7D%5Ctextrm%7BU%7D%20%5Crightarrow%20%5E%7B231%7D_%7B90%7D%5Ctextrm%20%7BTh%7D%2B%5E%7B4%7D_%7B2%7Dn)
Beta Decay : It is a type of decay process, in which a proton gets converted to neutron and an electron. This is also known as -decay. In this the mass number remains same but the atomic number is increased by 1.
![^{231}_{90}\textrm{Th}\rightarrow ^{231}_{92}\textrm {Th}+2^{0}_{-1}n](https://tex.z-dn.net/?f=%5E%7B231%7D_%7B90%7D%5Ctextrm%7BTh%7D%5Crightarrow%20%5E%7B231%7D_%7B92%7D%5Ctextrm%20%7BTh%7D%2B2%5E%7B0%7D_%7B-1%7Dn)
The resulting isotope is ![^{231}_{92}\textrm {U}](https://tex.z-dn.net/?f=%5E%7B231%7D_%7B92%7D%5Ctextrm%20%7BU%7D)