Answer:
Statistically significant.
Explanation:
The common example is tossing a coin.
The probability of tossing a head is 
.
The probability of tossing five heads in a row is 
.
p < 5 %, so this is a <em>statistically significant</em> result.
if someone tossed five successive heads, I would start thinking that the coin was loaded.
Because the equator is closer to the sun, the sun rays hit the earth’s surface which causes the temperature to be warm at a higher angle at the equator,
The ¹H-NMR of 1-Butanol is shown below,
There are
Five signals found in the proton NMR spectrum of 1-Butanol.
A
Broad Singlet signal at ≈
4.7 ppm (Down Field = More Deshielded) is for proton directly attached to Oxygen atom.
Triplet Signal at ≈
3.65 ppm (Down Field = Deshielded) is for methylene group directly attached to Oxygen atom.
Multiplet Signal at ≈
1.6 ppm is for methylene which is present between two methylene groups. The shielding effect is increasing as moving away from Oxygen atom.
Multiplet Signal at ≈
1.4 ppm is for methylene which is present between terminal methyl and methylene groups. The shielding effect is increasing as moving away from Oxygen atom.
Triplet Signal at ≈
0.9 ppm (Up Field = Most Shielded) is for terminal methyl group attached to methylene group.
Result: Five Signals are found in the ¹H-NMR of 1-Butanol.
Mole is the ratio of the mass to the molar mass of the substance and its unit is mol. The moles of isopropanol in the sample are 1. 31 moles.
<h3>What are moles?</h3>
Moles are the unit of measurement of the smallest entity of atoms, molecules, and compounds.
Given,
Mass of isopropanol (m) = 78. 6 g
Molar mass of isopropanol = 60. 1 g/mol
Moles of isopropanol is calculated as:
Therefore, moles of isopropanol are option b. 1.31 moles.
Learn more about moles here:
brainly.com/question/7210732
Answer:
- Two black balls: they represent a diatomic molecule composed by two atoms of the same element.
- One black ball and two black balls: they represent a compound formed by two different elements.
- One gray ball and two black balls: they represent a compound formed by two different elements.
- Two black-dotted balls: they represent a diatomic molecule composed by two atoms of the same element.
Explanation:
Hey there!
In this case, according to the given information, we can firstly bear to mind the fact that each ball color represents a different element, for that reason we can tell the following:
- Two black balls: they represent a diatomic molecule composed by two atoms of the same element.
- One black ball and two black balls: they represent a compound formed by two different elements.
- One gray ball and two black balls: they represent a compound formed by two different elements.
- Two black-dotted balls: they represent a diatomic molecule composed by two atoms of the same element.
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