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Hunter-Best [27]
2 years ago
15

Proteins have two main secondary structures: _______, which are spirals formed by hydrogen bonds between amino acids, and ______

_, which are formed by a bend in the amino acid with alternating hydrogen bonding between amino acids.
Chemistry
1 answer:
Musya8 [376]2 years ago
6 0

Answer:

Explanation:

Proteins have two main secondary structures: alpha helices, which are spirals formed by hydrogen bonds between amino acids, and beta pleated sheets, [ which are formed by a bend in the amino acid with alternating hydrogen bonding between amino acids.

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a balloon has a volume of 1.2 liters inside a room where the temperature is 25°C.What is the volume of this balloon when it is t
sashaice [31]

Answer:

1.04 L

Explanation:

Charles law states that for a fixed mass of gas, volume of gas is directly proportional to the absolute temperature at constant pressure.

\frac{V1}{T1} = \frac{V2}{T2}

where V1 is the volume and T1 is absolute temperature at first instance

and V2 is volume and T2 is absolute temperature at the second instance

Absolute temperature is temperature in the kelvin scale

T1 - 25 °C + 273 = 298 K

T2 -   -15 °C + 273 = 258 K

substituting the values in the equation

\frac{1.2 L}{298K} = \frac{V2}{258K}

V2 = 1.04 L

when the temperature is -15 °C the volume is 1.04 L

3 0
4 years ago
The volume of a single tantalum atom is 1.20×10-23 cm3. What is the volume of a tantalum atom in microliters?
sergiy2304 [10]

Answer:

1.20x10⁻²⁰μL

Explanation:

1cm³ is equal to 1milliliter. As we must know, 1milliliter = 1000 microliters, 1000μL. To convert the 1.20x10⁻²³mL we need to use the conversion factor: 1mL = 1000μL.

The volume of tantalum in μL is:

1.20x10⁻²³mL * (1000μL /1L) = 1.20x10⁻²⁰μL

3 0
3 years ago
If a gas is heated from 298.0 K to 398.0 K and the pressure is increased from 2.230 x 103 mm Hg to 4.560 x 103 mm Hg what final
dimulka [17.4K]
1.54 I think... if that isn't correct you should use Google, a study guide, or a calculator
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Answer: C

Explanation:

7 0
3 years ago
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