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2 years ago

What three types of noncovalent bonds help proteins fold?.

Chemistry

1 answer:

NeTakaya2 years ago

8 0

Hydrogen bonds, electrostatic attractions, hydrophobic interactions, and Van der Waals attractions.

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A chemist is studying small organic compounds for their potential use as an antifreeze. When 0.243 g of a compound is dissolved

harina [27]

Molar mass = 144.2 g/mol.

<h3>Calculate Molar mass.</h3>

Formula to solve this: ΔT = Kf . m

ΔT → Freezing point of pure solvent - Freezing point of solution

0°C - (-1.94°C) = 1.86 °C/m . m

1.94°C / 1.86 m/°C = m → 1.04 m

1.04 are the moles of solute in 1kg of solvent → molality (mol/kg)

Let's convert the mass of our solvent in kg to determine the moles.

80 g . 1kg / 1000 g = 0.08 kg

Molality . kg of solvent → Solute moles

1.04 mol/kg . 0.080 kg = 0.0832 moles

These are the moles of 12 g of solute. To find the molar mass → g/mol

12 g / 0.0832 mol = 144.2 g/mol

To learn more about Molar mass from the given link:

brainly.com/question/14787860

#SPJ4

4 0

1 year ago

Which of the following phrases best describes the disposal method used for high-level nuclear waste?

m_a_m_a [10]

<u>Answer:</u>

The disposal method used for high-level nuclear waste Concentrate and contain

<u>Explanation:</u>

High intensity nuclear waste is an underlying issue for the world where the generated nuclear waste is one side very hazardous and on other side would help us in many viable processes but the negative sides of a consequence just outnumber the positive sides of the situation.

Concentrate and contain is a waste disposable method which enables the nuclear waste to be preserved and isolated and later be used when the time comes. Other methods would not be suggested because they could cause a huge amount of dangerous radioactivity in oceans which is often harmful for people.

8 0

3 years ago

If a sample contains 21.2 g N, how many moles of N does it contain?

cupoosta [38]

Hello!

If a sample contains 21.2 g N, how many moles of N does it contain?

0.66 mol

1.51 mol

14.01 mol

297.01 mol

We have the following data:

m (mass) = 21.2 g

MM (Molar mass of Nitrogen) = 14 g / mol

n (number of moles) = ?

Formula:

$n = \dfrac{m}{MM}$

Solving:

$n = \dfrac{m}{MM}$

$n = \dfrac{21.2\:\diagup\!\!\!\!\!g}{14\:\diagup\!\!\!\!\!g/mol}$

$\boxed{\boxed{n\approx 1.51\:mol}}\end{array}}\qquad\checkmark$

Answer:

1.51 mol

_______________________________

I Hope this helps, greetings ... Dexteright02! =)

5 0

4 years ago

Read 2 more answers

For Kw, the product of [H3O+] and [OH-] is ___________.

Levart [38]

Answer:

the product of the equation is 1.0 x 10^-1

trust me, i'm a major in Biochem :)

8 0

3 years ago

In the reaction 2NaCl + 2H2O ? 2NaOH + Cl2 + H2, the reactants should:

Airida [17]

I think the correct answer from the choices listed above is option 3. In the reaction 2NaCl + 2H2O ? 2NaOH + Cl2 + H2, the reactants should <span>weigh the same as the products. This is to agree with the law of conservation of mass where mass in should be equal to mass out.</span>

8 0

3 years ago