Which amino acid is least likely to produce a hydrogen bond with water or polar molecules?

Answers

Answer 1
9 amino acids (alanine, cysteine, glycine, isoleucine, leucine, methionine, phenylalanine, proline, valine) have no hydrogen donor or acceptor atoms in their side chains.

Related Questions

Imagine a friend is planning a rock-climbing trip. Write a note in the box explaining how gas exchange is affected at the top of a mountain, where air pressure is lower and there is less oxygen than at lower altitudes.

Answers

Answer:

Air is less dense on a mountaintop than at sea level.

Air pressure is lower at low altitudes.

As you climb a mountain, air pressure increases.

More force pushes on the air at the bottom of an air column.

As you descend a mountain, air molecules are closer together.

Explanation:

Isotopes of an element have 2 things that change. What are they?

Answers

Answer:

.

Explanation:

Isotopes are different in neutrons and mass number.

Which statement describes a chemical property that many elements might share?
A. bonds easily with oxygen in the air
B. boils between 90°C and 100°C
C. shines when polished
D. floats in water

Answers

ANSWER:

I think its B.

Which of these features of Earth's crust are caused by the shifting of tectonic plates?
A
mid-ocean ridges
B
desert sand dunes
С
arctic glaciers
D
continental shelves

Answers

I’m pretty sure it’s A mid-ocean ridges

To solve this we must be knowing each and every concept related to  tectonic plates. Therefore, the correct option is option A among all the given options.

What is  tectonic plates?

The lithosphere, which includes the crust and topmost mantle, is divided into portions by tectonic plates. Numerous dangers, including volcanic eruptions, earthquakes, and tsunamis, are caused by the relative movement of tectonic plates.

Because of the makeup of the rocks inside the plates, tectonic plates can float on the mantle. This reduces their density relative to the mantle. Granite rock, which contains quartz, feldspar, as well as other relatively light materials mostly comprised of silicon and aluminum, makes up the continental crust. Mid-ocean ridges, earth's crust are caused by the shifting of tectonic plates.

Therefore, the correct option is option A.

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What is the charge of a carbon ion that has gained 4 electrons?

Answers

Answer:

Negative

Explanation:

Any atom gaining electrons will get a negative change since the charge of the electron is negative.

a beaker contains 0.250 l of liquid. a student pours 0.00385 L of liquid out of the beaker. How much liquid remains in the beaker? choose the value reported with the correct number of significant figures

Answers

Answer:

The volume of the liquid remaining in the beaker is 0.24615 l

Explanation:

The initial volume of liquid in the beaker = 0.250 l

The volume of liquid the student pours out of the beaker = 0.00385 l

The volume of liquid remaining in the beaker, V, is given as follows;

V = The initial volume of liquid in the beaker - The volume of liquid the student pours out of the beaker

Therefore, we have;

V = 0.250 l - 0.00385 l = 0.24615 l

The volume of the liquid remaining in the beaker is 0.24615 l.

Mass is usually measured in grams and

Answers

It’s grams and kilograms
I hope this helps you :)


Help Plzzzzzz!!!!!!!

What is the difference between magma and lava?

A Magma is molten rock within the earth; lava is molten rock on the earth's surface.
B Magma is cool, lava is very hot.
Magma is very hot, lava is cool.
D Magma is molten rock on the earth's surface; lava is molten rock within the earth.

Answers

A Is the answer babez a:)

Answer:

A

Explanation:

your welcome have a great day.

How do protons, neutrons, and electrons differ in terms of their electrical charges and
locations within the atom?

Answers

Answer:

Protons and Neutrons are large particles and are densely compacted into the nucleus of the atom. Protons are electrochemically positive in charge and the Neutrons are electrochemically neutral in charge. ... Electrons are electrochemically negatively charged particles that move random around the nucleus

Explanation:

Protons are positively charged, neutrons are neutral and they both are located in the nucleus whereas electrons are negatively charged and located outside the nucleus.

Explanation:

Atom is defined as the smallest unit of a matter.It consists of three subatomic particles: protons, neutrons, electrons.Protons and neutrons are located inside the nucleus. They are also known as nucleonsElectrons are located outside the nucleus.Protons carry a positive charge, electrons carry a negative charge, and neutrons carry no charge (neutral).

So from this, we conclude that the protons are positively charged, neutrons are neutral and they both are located in the nucleus whereas electrons are negatively charged and located outside the nucleus

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1
How many significant figures are there in 9,000,500 mL?

Answers

There are 2 significant figures in this number. A significant figure is any number that isn’t 0. Hope this helps.

HELPPPP!
can we manufacture water? why or why not

Answers

Answer:

No because water needs to have no salt

Explanation:

Oil and water placed in a jar will separate. Even when
shaken and mixed, the oil still separates from the
water.
Which best describes oil and water?
Oil and water are highly soluble because they have
separate chemical properties.
Oil and water have a low solubility because they
have separate chemical properties.
Oil and water are highly soluble because they exert
different pressures
Oil and water have a low solubility because they
exert different pressures.

Answers

The answer is option B :)

According to the concept of solubility, oil and water have a low solubility because they have separate chemical properties.

What is solubility?

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

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Convert 1200 grams to kilograms.

Answers

1.2 kilograms because 1200 grams=1.2kilo

is carbon dioxide gas an element or a compound

Answers

Answer:

Carbon Dioxide gas is a compound.

Cathy is reading a science article about exercise. She learns that exercise
causes a person to breathe faster. The next part of the article has the title
"Heart Rate." In that part of the article, Cathy is sure she'll read about how
exercise causes the heart to beat faster. What active reading strategy is
Cathy using?
A. Monitoring and applying fix-up strategies
O B. Summarizing
O C. Making predictions
D. Making mental images

Answers

I think it’s going to be a

What’s the phase change to solid to gas

Answers

This phase from solid to gas is called sublimation

what is strong interaction in atoms​

Answers

Answer:

Alternative Titles: nuclear force, strong interaction, strong nuclear force. Strong force, a fundamental interaction of nature that acts between subatomic particles of matter. The strong force binds quarks together in clusters to make more-familiar subatomic particles, such as protons and neutrons.

If you were running an experiment to determine the temperature at which
beans grow the fastest, what would be the dependent variable?*
The number of beans you plant.
The height of the sprouts you grow.
The amount of water you give the beans.
The temperature at which each bean is kept.

Answers

Answer:

Well, it would be the height of the plant. The independant varibles would be the amount of water you give the beans or the temperature you keep them!

Explanation:

I hope this helps!

how many grams are equal to 413 kg

Answers

Answer:

413,000 grams

Explanation:

Answer:

413,000

Explanation: That's because 1 kg equals to 1,000 grams.

All atoms that react

Answers

Need more to the question

Answer: Electrons

Explanation:

A student places 1.38g of unknown metal at 99.6C into 60.50g of water at 22.1C. The entire system reaches a uniform temperature at 31.6C. Calculate the specific heat of the metal

Answers

Explanation:

Heat energy lost by metal = Heat energy gained by water.

(0.00138kg) * c * (99.6-31.6) = (0.006050kg) * 4.148 * (31.6-22.1)

c = 2.541J/kg°C

Your bedroom air conditioner blows very cold air at night but only cool air during the day. Your bedroom gets lots of direct sunlight all day long. What's the hypothesis and experiment.

Answers

What is the experiment

Why was cowpox not deadly as smallpox?

ANYONE WHO ANSWERS THIS GETS BRAINLIEST ANSWER

Answers

Cowpox wasn’t deadly as smallpox because they used it as a vaccine against smallpox.

Silus wants to monitor the temperature of a reaction every 0.5 seconds for 30 minutes. He plans to generate a graph of the temperature values over time and insert the graph into a text document. Which pair of tools would be best for Silus to use?

Answers

Answer:

an electronic temperature probe and a computer

Ex of physical Properties

Answers

Examples of physical properties are
-Viscosity
-Conductivity
-Malleability
-Hardness
-Melting Point
-Boiling Point
-Density

Which property is a physical property?
A:malleable
B:becomes moldy quickly
C:easy to digest
D:does not burn

Answers

I think the answer is b

Answer:

The answer is B. Becomes moldy quickly.

Explanation:

This is the most logical answer out of all of them an I took the test.

HELP PLEASE!!!

Which best represents the law of conservation of mass?

A- mass of reactants > mass of products

B- mass of reactants < mass of products

C- mass of reactants = mass of products

D- mass of reactants -> mass of products​

Answers

Answer:

c

Explanation:

the input of the mass is always equal to the mass of the outputs

Answer:

The correct answer is C

Explanation:

I did C like they said and it was correct!

please help me with answering this question :( asap!!

Answers

Answer:

32. CnH2n+2

33. Ester

34. Water and corbondioxide.

35. dibromoethane

Which is the electron configuration for nobelium (No)?
O [Rn]7s25414
O [Rn]7s2547
O [Ne]3s 3p
O [Xe]6s25d1
Plz help

Answers

Answer:

the answer is [Rn]7s25f14 (first option)

Explanation:

i took the test

The electronic configuration for nobelium (No) is [Rn]7s²5f¹⁴, hence the correct option is A.

What is electronic configuration?

The distribution of an element's atoms' electrons throughout several atomic orbitals is symbolically represented by the electronic configuration of that element.

A standardized nomenclature is used for expressing electron configurations, in which the energy level and type of orbital are written first, followed by the number of electrons in the orbital, which is expressed in superscript.

The atomic number of nobelium (No) is 102.

The number of protons is equal to the atomic number, which is 102.

The number of electrons is equal to the number of protons, which is 102.

Therefore, electronic configuration for nobelium (No) is [Rn]7s²5f¹⁴.

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The given question is incomplete, so the most probable complete question is,

Which is the electron configuration for nobelium (No)?

A. [Rn]7s²5f¹⁴

B. [Rn]7s²5f⁷

C. [Ne]3s²3p⁷

D. [Xe]6s²5d¹

You are measuring the effects of salt on water's ability to freeze. To one of your water samples, you add sodium chloride (NaCl, or salt). In this solution, which part is the solvent?

Question 8 options:

Water


NaCl


Both


Neither

Answers

Answer:

water

water is the worlds best solvent cause it can melt many different things also it is called the "Universal Solvent"

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