Answer:
High surface tension causes boiling point to increase.
Explanation:
The surface tension is related to the psychical forces between the molecules. Increasing the surface tension will increase the amount of energy (heat) needed to take the molecules apart and go from liquid state to vapor state, so the boiling point of the particular liquid will increase.
Answer: The energy of the products exceeds the activation energy threshold.
Explanation:
In the reverse reaction, the reactants of the forward reaction are now the products of the reverse reaction and vice versa.
This means that normally since you would need the energy of the reactants of the forward reaction to exceed the activation energy threshold, in the reverse reaction, the energy of the products would need to exceed the activation energy threshold.
Answer:
please where is the Gibb free energy to indicate if its exothermic or endothermic reaction but the chemical equation is homogeneous one.
Answer:
STM = Scanning Tunneling Microscope
Explanation:
STM and its significance
<em>It is the microscope that can take </em><u><em>images of the particles at the atomic scale</em></u><em>.It opens the door to under the </em><u><em>nano-scale process .</em></u>
<u><em>In 1986 Heinrich Rohrer won the nobel prize for its discovery</em></u>
<u><em>It doesn't magnify images like other microscopes .</em></u>
<u><em>It uses the principle of quantum tunneling. </em></u>
Working :
<em>A fine needle like tip is scanned on the surface of electrically conducting sample. When voltage is applied , the electron jumps between the suface of the tip and sample . This flow of electron is detected by the detector. It can resolve the image upto 0.000000001 m or 1 nm (nanometer)</em>
Uses :
- The STM is used in molecular science called nanotechnology to study nano phenomenon
- Its prototype AFM are used to Study wide range of Nano-particles
- STM is used in atomic deposition of metals with required scientific pattern, which can be used as nanodevices themselves.
- It is used to study electron-friedel oscillation on the surface of metals.
- It is used to modify sample surface.
The best and most correct answer among the choices provided by your question is the third choice or letter C.
Chlorine would have the same chemical properties as Iodine because they are both non-metals and belong to a single group called "Halogens".
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