Answer:
The answer is freezing (Option B)
Explanation:
To begin with, it is important to note that lava flowing from Hawaiian volcanoes are not sticky but very runny. They cool down or freeze after flowing a long way.
Since the lava is not sticky (because it is not thick), it means they are thin and prone to freezing or cooling immediately when the flow stops. Upon freezing, the lava forms crystal rocks (shiny in texture and gray in color) that are not big.
The Thiele tube which is look like a triangle, used for the determination of melting and boiling point of the solid and liquid sample respectively. The tube consists of high viscous oil. The mouth of the triangle tube consists the thermometer and the sample through a rubber stopper. The tube is always heated in low flame as the heating mechanism of the oil is through convection current process, in which the molecules of the oil heated passes through out the bulk to make a uniform heat of the liquid. The uniform heat of the liquid is necessary to determine the exact melting point of the solid. Also the low heating rate is compulsory so that the rate of convection current be slow. The high heating rate may cause fast convection in the oil and the hot oil can spill out from the tube and may cause an accident.
Answer: after years of research if the evidence still supports a change the theory will be revised
Explanation:
I think that’s it
The correct answer is option 3. The IUPAC name is Iron(II) sulfide. It is the less stable amorphous form. When this is powdered, it is pyrophoric or it ignites spontaneously in air. It readily reacts with hydrochloric acid producing hydrogen sulfide.
The answer is D. (2,2,2,1)