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2 years ago

What is an element? Arrow

Chemistry

1 answer:

Butoxors [25]2 years ago

7 0

Answer:

One arrow is positioned in each box according to Hund's Rule which tells us to maximise the number of unpaired electrons in orbitals of the same subshell, and, to give those electrons the same "spin" (parallel spin).

Explanation:

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Oksana_A [137]

Answer:

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3 years ago

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Alpha helices are a type of secondary structure in proteins. What is the length of a 69.0 69.0 kDa single‑stranded α‑helical pro

Veronika [31]

Answer : The length of protein will be, 94.1 A⁰

Explanation :

First we have to calculate the amino acid residue.

$\text{Amino acid residue}=\frac{\text{Length of single strand of protein}}{\text{Mean residue mass}}$

Given:

Length of single strand of protein = 69.0 kDa

Mean residue mass = 110 Da

$\text{Amino acid residue}=\frac{69.0kDa}{110Da}=\frac{69000Da}{110Da}=627.3$

Now we have to calculate the number of turns in protein.

$\text{Number of turns in protein}=\frac{\text{Amino acid residue}}{3.6\text{amino acid per turn of the alpha-helix}}$

As there are 3.6 amino acid per turn of the alpha-helix.

$\text{Number of turns in protein}=\frac{627.3}{3.6}=174.25$

Now we have to calculate the length of the protein.

$\text{Length of protein}=\text{Number of turns in protein}\times \text{Length of each turn}$

As, we know that the length of each turn = 0.54 A⁰

$\text{Length of protein}=174.25turns\times \0.54\AA=94.1\AA$

Thus, the length of protein will be, 94.1 A⁰

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3 years ago

Last friday the atmospheric pressure in our 2nd year lab was measured as 731 mmhg. Calculate the temperature at which water woul

faust18 [17]

Answer:

p1/T1=p2/T2

760mmHg/212°F=731mmHg/T2

T2= 203.91°F

760mmHg/100°C=731mmHg/T2

T2= 96.18°C

Explanation:

You'd have to choose in which units you want to express the temperature.

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