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3 years ago

A. What causes these H-bonds to form? (Hint: Look at the charged regions.)

Chemistry

1 answer:

Shkiper50 [21]3 years ago

3 0

Answer:

Hydrogen bonding is caused by the tendency of some atoms in molecules to attract electrons more than their accompanying atom. This gives the molecule a permanent dipole moment , it makes it polar, so it acts like a magnet and attracts the opposite end of other polar molecules.

Explanation:

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What is the primary cause of diffusion? some substances can dissolve in solvents heat added to a substance random internal motio

Nina [5.8K]

Answer:

random internal motion of atoms and molecule

Explanation:

The primary cause of diffusion is the random internal motion of atoms and molecules.

Randomness of atoms and molecules results in diffusion.

Diffusion is the movement of particles from a region of high concentration to that of lower concentration.
Substances often tend to spread out over the concentration gradient.
Therefore, they have this propensity to be randomized.

3 0

3 years ago

Write a balanced chemical equation that describes an acid-base reaction that would allow you to determine the moles of aspirin p

Kryger [21]

A balanced equation representing the acid-base reaction that allows the calculation of the moles of aspirin in a sample is

$C_{9} H_{8}O_{4} + NaOH$ ⇒ $C_{9} H_{7}O_{4} Na+ H_{2} O$

Aspirin, also known as acetylsalicylic acid, is a nonsteroidal anti-inflammatory drug used to reduce pain, fever, and/or inflammation, and as an antithrombotic.

Aspirin is a benzoic acid with an ortho-substituted acylated alcohol function (actually a phenol). Therefore, two reactions can occur when aspirin and NaOH are combined: In fact, several aspirin formulations contain this ingredient.

Hence, A balanced equation representing the acid-base reaction that allows the calculation of the moles of aspirin in a sample is

$C_{9} H_{8}O_{4} + NaOH$ ⇒ $C_{9} H_{7}O_{4} Na+ H_{2} O$

To know more about Aspirin, here : brainly.com/question/23878261

#SPJ4

6 0

1 year ago

What is the correct name for the compound with the chemical formula NH4NO3?

olga nikolaevna [1]

Answer:

The correct answer is - Ammonium nitrate.

Explanation:

Ammonium nitrate is a chemical compound that is represented by the chemical formula NH4NO3. It is a chemical compound with ions of ammonium and nitrate that forms a white crystalline solid which is soluble in water.

Ammonium nitrate is used as fertilizer in agriculture to provide a high amount of nitrogen to the soil and plants. It is a hygroscopic as a solid chemical compound.

4 0

3 years ago

An element consists of two isotopes. The abundance of one isotope is 95.72% and its atomic mass is 114.9041 u. The atomic mass o

meriva

Answer:

d. 114.8 u

Explanation:

The formula for the calculation of the average atomic mass is:

$Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})$

Given that:

For first isotope:

% = 95.72 %

Mass = 114.9041 u

For second isotope:

Since the element has only 2 isotopes, so the percentage of second is 100 - first percentage.

% = 100 % - 95.72 % = 4.28 %

Mass = 112.9043 u

Average Mass = ?

Thus,

$Average\ atomic\ mass=\frac {95.72}{100}\times {114.9041}+\frac {4.28}{100}\times {112.9043}\ u$

Average atomic mass = 114.8 u

3 0

3 years ago

The wavelength of visible light varies from 380 nm to 750 nm as the color of the light changes from violet to red. Calculate the

Anika [276]

Answer:

energy of photon=1.824ev

Explanation:

given wavelength of ligt=6.8×10⁻⁷m=6800A⁰

energy of photon(E)=hc/λ;

and for simplicity

E=12400/λ

where λ is aken in angstorm

and energy in ev

E=12400/6800ev

E=1.824ev=energy of photon

7 0

3 years ago