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horrorfan [7]
4 years ago
11

Mr.Davies has requested that you wait for 10 more minutes is that informal or formal

Chemistry
2 answers:
LUCKY_DIMON [66]4 years ago
7 0

Answer:

Formal

Explanation:

s2008m [1.1K]4 years ago
3 0

Answer:

I think its formal because the question looks a bit fancy by using all the present perfect tense..

hope this helped you

please mark as the brainliest ( if its correct)(ㆁωㆁ)

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What is the hydroxide [OH-] concentration of a solution that has a pOH of 4.90? 14 14 1.26 x10-5 1.26 x10, -5 9.1 9.1 7.94 x 104
polet [3.4K]

Answer:

The hydroxide [OH-] concentration of the solution is 1.26*10⁻⁵ M.

Explanation:

The pOH (or potential OH) is a measure of the basicity or alkalinity of a solution.

POH indicates the concentration of hydroxyl ions [OH-] present in a solution and is defined as the negative logarithm of the activity of hydroxide ions (that is, the concentration of OH- ions):

pOH= -log [OH-]

A solution has a pOH of 4.90. Replacing in the definition of pOH:

4.90= -log [OH-]

Solving:

-4.90= log [OH-]

1.26*10⁻⁵ M= [OH-]

<u><em>The hydroxide [OH-] concentration of the solution is 1.26*10⁻⁵ M.</em></u>

3 0
3 years ago
How many atoms of each element are represented in Sn(CO3)2
Marina86 [1]
Sn=2
C and O=6
Im pretty confident yet I forgot a bit.
3 0
3 years ago
Read 2 more answers
BRAINLIEST IF YOU GET IT!! 5 STARS &amp; A THANK YOU!!
Keith_Richards [23]

Answer:

B.

Explanation:

Minerals are formed due to chemical composition by rocks are pressured into their formed from dirt and naturally hard things.

7 0
3 years ago
Which molecule will undergo only london dispersion forces when interacting with other molecules of the same kind?.
Neko [114]

Molecules undergo London dispersion forces:

C_{4}H_{10} is the molecule will undergo only London dispersion forces when interacting with other molecules of the same kind.

What are London dispersion forces?

  • A sort of force that interacts between atoms and molecules that is often electrically symmetric is referred to as a London dispersion force.
  • When viewed from the nucleus, their electron distribution is frequently symmetrical. This dispersion force, which is also known as a transient attractive force, is frequently observed when the locations of the electrons in two nearby atoms cause the atoms to temporarily form dipoles.
  • The bond is polar when there are significant variations between the elements' electronegativities; it is nonpolar when there are similarities. When the molecule's dipole moment is equal to O, it is nonpolar; when it differs from O, it is polar.
  • The force at these molecules is known as the London dispersion force. In nonpolar molecules, the forces are weak, and partial charges must be induced so that they can bond. In polar molecules, partial charges caused by polarity result in a stronger link known as a dipole-dipole. The dipole-dipole is significantly stronger and known as a hydrogen bond if it is connected to a large electronegative atom (F, O, or N). Ionic force is the name for the attraction force at ionic substances.
  • The intermolecular force in the letter an is the London dispersion force because the compound is nonpolar;

<u>Reason for incorrect options:</u>

b: the compound is ionic because Na is a metal and the other part is covalent,

c: two compounds are possible: one is nonpolar and exhibits London dispersion force; the other is polar and exhibits dipole-dipole force; and

d: both compounds exhibit hydrogen bonds (H bonded to O, and H bonded to F).

NOTE: Your question is incomplete, but most probably your full question was, which molecule will undergo only London dispersion forces when interacting with other molecules of the same kind? Which molecule will undergo only London dispersion forces when interacting with other molecules of the same kind?

A. C_{4}H_{10}

B. NaC_{2}H_{3}O_{2}

C. CH_{2}C_{12}

D. C_{2}H_{5}OH HF

Learn more about the London dispersion forces here,

brainly.com/question/22388709

#SPJ4

4 0
2 years ago
White moths were found in huge numbers in the city of Birmingham these moths could be easy camouflage by the trees because of st
natima [27]

Answer:

It declined drastically  

Explanation:

The moths were active at night and rested  by day on white birch trees, where they were effectively camouflaged from predators.

However, as the city became more industrialized, the trees were covered with black soot from the factories.

The white moths lost their camouflage, so their population declined drastically, as their predators could now find them more easily.

5 0
3 years ago
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