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VARVARA [1.3K]
3 years ago
11

The coiling of the protein chain backbone into an alpha helix (like a spring) is referred to as the ________.

Chemistry
1 answer:
Agata [3.3K]3 years ago
5 0

Answer: secondary structure

Explanation:

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2. A block of material has a volume of 2 m3. It has a mass of 1 × 104 kg. Calculate the density of the material sample and expre
maks197457 [2]
Density = mass / volume

D = 1 x 10⁴ / 2

D = 5000 kg/m³ in g/cm³:

1 kg/m³ ---------------- 0.001 g/cm³
5000 kg/m³ ----------- ??

5000 x 0.001 / 1 =>  5.0 g/cm³

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7 0
3 years ago
You have 263 mL of liquid mercury, what is the mass of mercury that you have?
Gelneren [198K]

Answer:3,550.5 g

Explanation:

Mass= density×volume

Mass= 13.5g/m.l×263ml

Mass=3,550.5 g

Please add me the brainleist!!!!!!!!

7 0
3 years ago
What is missing from the solubility graph shown on the right? A graph with temperature in degrees Celsius ranging from 0 to 100
AVprozaik [17]

Answer:

graph title, label for the y axis, and legend explaining the orange and blue colors

Explanation:

8 0
2 years ago
Read 2 more answers
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 1.30 MJ o
Sunny_sXe [5.5K]

Answer:

97 000 g Na

Explanation:

The absortion (or liberation) of energy in form of heat is expressed by:

q=m*Cp*ΔT

The information we have:

q=1.30MJ= 1.30*10^6 J

ΔT = 10.0°C = 10.0 K (ΔT is the same in °C than in K)

Cp=30.8 J/(K mol Na)

If you notice, the Cp in the question is in relation with mol of Na. Before using the q equation, we can find the Cp in relation to the grams of Na.

To do so, we use the molar mass of Na= 22.99g/mol

Cp= \frac{30.8J}{K*mol Na}*\frac{1 mol Na}{22.99 g Na}=1.34\frac{J}{K*g Na}

Now, we are able to solve for m:

m=\frac{1.30*10^6 J}{1.34\frac{J}{K*g Na} *10.0K}=\frac{1.30*10^6J}{13.4\frac{J}{g Na} }  = 9.70*10^4 g Na=97 Kg Na=97 000 g Na

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3 years ago
Read 2 more answers
How is humility related to air pressure
Gnom [1K]
Humid air has higher pressure because of the heaviness of water humid air is lighter so it has lower pressure.
5 0
3 years ago
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