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Akimi4 [234]
3 years ago
10

During a chemical reaction, heat is absorbed. What kind of reaction occurred?

Chemistry
2 answers:
ale4655 [162]3 years ago
8 0

Answer:

b

Explanation:

Mumz [18]3 years ago
8 0
Answer: b explanation:
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The IR spectrum of a solid can be taken by dissolving it to create a solution. An appropriate solvent is Choose... because its I
irina [24]

Answer:

An appropriate solvent is <u>only in the fingerprint region. </u>

Explanation:

For scientists to study the infrared spectra of substances in the various states of matter, solutions are usually made with solvents. However, it has been noted that some of these solvents can interfere with the reaction spectra or be absorbed within the range of the solutes. A solution to this problem is using the right solvents with non-interfering infrared spectrum and which have no chemical effect on the solute.

The bands formed by the solvent should also be located in the the fingerprint spectrum. Examples of solvents used to achieve this and which meet up these requirements include, Carbon tetrafluoride and Carbon disulfide.  

5 0
3 years ago
It's almost time for bed but before you're ready to go to sleep you decide to make yourself a cup of hot chocolate and a tasty s
ehidna [41]

1. Milk.

2. What is in the bowl the popcorn, cereal, and pretzels.

3. Hot chocolate and hot milk.

4. Hot chocolate mix.

5. Hot milk.

6. No, because the hot chocolate powder was meant for hot liquids and with cold water it will take longer to dissolve.

You don't have to write exactly as me change it up if you need to hope this helps!!!

8 0
3 years ago
Can anyone help me with the calculations for the Frequency, Wavelength, Energy Chart?
sergeinik [125]
Use the following equations to fill the chart.

E = hf
where
h = 6.63 x 10⁻³⁴ J/s, Planck's constant
f = frequency Hz
E = quanta of energy, J

c = fλ
where
c = 3 x 10⁸ m/s, the velocity of light
λ = wavelength, m

If energy is given in J/mmol, divide by Avogadro's number, N = 6.02 x 10²³, to convert it to J.

The completed table is shown below.

3 0
3 years ago
Select the statement (2.5 points) (A) Bonding is the joining of the two atoms in a stable arrangement. (B) Through bonding , ato
Tanya [424]

Answer:

The correct answer is (D) All of the above.

Explanation:

A chemical bond is the attraction force between atoms (covalent bond) or between oppositely charged ions (ionic bond) to form a stable arrangement. In order to get a stable arrangement must be fulfilled the octet rule. This establishes that an atom could share (covalent bond) win or lose (ionic bond) electrons with other atoms till every atom has eight valence electrons. The complete outer shell of valence electrons make elements stable to get a stable noble gas configuration.

6 0
3 years ago
Atoms that have a full outer level combine with other atoms. Is this true or false
aev [14]

Answer:

false

Explanation:

some atoms already have a full outer level

8 0
3 years ago
Read 2 more answers
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