The first image shown at the left hand side is a pi bond. The other two images show sigma bonds.
In chemistry, a bond results from the overlap of atomic orbitals. This overlap may be end to end (sigma bond) or side by side (pi bond). Having said this, it is easier to decide whether the bonds in the image shown are sigma or bi bonds.
If we label the images; 1,2,3 from left to right, we can see that the overlap in image 1 is side by side. The electron density lies above and below the plane of the bond. This is a pi bond. In images 2 and 3, the overlap occurs in an end to end manner. This is a sigma bond.
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The answer is testing a hypothesiss
Answer:
0.4 moles of KOH is required to neutralize 0.4 moles of HNO3.
Explanation:
The equation of the reaction is
KOH(aq) + HNO3(aq) ------> KNO3(aq) + H2O(l)
This is a neutralization reaction. A neutralization reaction is a reaction between an acid and a base to form salt and water only.
Having written the balanced chemical reaction equation, we can now solve the prob!em stoichiometrically.
From the balanced reaction equation;
1 mole of KOH is required to neutralize 1 mole of HNO3
Therefore x moles of KOH is required to neutralize 0.4 moles of HNO3
x= 1×0.4/1 = 0.4 moles
Therefore, 0.4 moles of KOH is required to neutralize 0.4 moles of HNO3.
<h3>Question :</h3>
The use of genetics by farmers to produce more abundant and healthier crops is an application of the science of _____.
<h3>Answer :</h3>
The use of genetics by farmers to produce more abundant and healthier crops is an application of the science of <u>biotechnology</u>.
So correct option is 2nd biotechnology.
<h3>Explanation :</h3>
Biotechnology is the use of biological structures and processes for useful industrial purposes, whether product or function.
Hunger is an internal stimulus and and is internal because it is not physicial.
Ex. You dont feel hunger.. like poking you so you cant feel hunger