The best and most correct answer among the choices provided by your question is the third choice or letter C.
Lithium is the <span>element that can combine with chlorine to make the best conductor of electricity when in the liquid form because </span><span>it has a much lower electronegativity value.</span>
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You were able to access the internet to post this question because of science. Medicine or vitamin supplements you take are a result of science. You use soap to wash your hands because of our understanding of how germs work, which is science. Practically anything you can think of has come about through the achievements of science. <span>Image formation (due to phenomenon of reflection). </span><span>Mirage (Its a everyday thing in deserts due to refraction) </span>
Dispersion of light (Color recognition by our eyes due to dispersion). Three actual everyday occurence that are created through science are Nuclear power. Antibiotc Drugs- t<span>o give some merit to the above three, laser light</span>
Answer:
80%
Explanation:
Thermal efficiency is a measure of the extent to which a heat engine is able to convert to other form. It is measure in percentage.
Thermal efficiency = 
× 100%
Where 
is the input energy and 
is the output energy.
Given that: = 2400 J and = 3000 J, therefore:
Thermal efficiency = 
× 100%
= 80%
The thermal efficiency of the engine is 80%.
Answer:
Thread.
Explanation:
The most common form consists of a cylindrical shaft with helical grooves or ridges called threads around the outside.
Sn is Tin which has 50 atomic number
it means it has 50 electrons in its outer shells
+2 shows its valency
plus sign comes when electrons are removed from an atom
so here 2 electrons are removed from Sn atom
remaining electrons are 50-2
48 electrons
