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Lelu [443]
3 years ago
13

Which molecular formula is also an empirical formula? 1)C6h6 2)h2o2 3) n2h4 4) n2o5

Chemistry
2 answers:
Vikki [24]3 years ago
8 0
The answer is number 4, N2O5.

Because it can't be divided any further since 2 and 5 do not have a common divisor.
bekas [8.4K]3 years ago
7 0
N2o5 is the answer for this question

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Control: skunk
Independent: poking (the skunk)
dependent: emission of toxic fumes
3 0
3 years ago
A student made the Lewis dot diagram of a compound as shown.
Anton [14]

Answer:

the answer is number 2

Explanation:

4 0
3 years ago
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The process by which glucose is converted to starch is known as
podryga [215]

Answer:

polymerization

Explanation:

Glucose is converted into starch by the process called polymerization. In polymerization, several simple and soluble molecules of glucose are put together to form a complex, insoluble molecule of starch.

Glucose is soluble , so it is converted to starch so that it can become insoluble and hence it cannot escape from cell , thus it can also be stored.

7 0
2 years ago
What is the pH of a 2.2 M solution of HClO4?
agasfer [191]
Since HClO4 is a strong acid it will completely dissociate in solution. 

HClO4 + H2O --> H3O+ + ClO4-

Therefore, your concentration of HClO4 will be equal to your amount of H3O+, the conjugate acid in solution. 

The Ka expression is as follows:

Ka= [H3O+][ClO4-] / [HClO4] 

So you know that -log [H3O+] gets you pH, so just plug in [2.2] as your concentration of H3O+ and your answer should be -.34 pH


7 0
3 years ago
The table gives information about four particles, a, b, c and d. complete the table.
kobusy [5.1K]

The missing parts in the table is given below

  • Bi.  Nucleon number => 23
  • Bii. Symbol => Na⁺
  • Ci. Number of electrons => 10
  • Cii. Nucleon number => 16
  • Di. Number of protons => 13
  • Dii. Number of neutrons => 15

<h3>Composition of atom</h3>

An atom is composed of a centrally placed nucleus (containing protons and neutrons) and a cloud of electrons revolving round it.

<h3>Relatioships</h3>

Mass number (number of nucleon) = Proton + Neutron

Charge = Proton – Electron

<h3>How to determine the missing part of particle B</h3>

i. Determination of the nucleon number

  • Proton = 11
  • Neutron = 12
  • Nucleon number =?

Nucleon number = Proton + Neutron

Nucleon number = 11 + 12

Nucleon number = 12

ii. Determination of the symbol

We'll begin by determining the charge of the particle. This is illustrated below:

  • Proton = 11
  • Electron = 10
  • Charge = ?

Charge = Proton – Electron

Charge = 11 – 10

Charge = +1

From the periodic table, the element with proton number of 11 is sodium, Na. Since the particle B has a charge of +1, the symbol of particle of B is Na⁺

<h3>How to determine the missing part of particle C</h3>

i. Determination of the number of electrons

  • Proton = 8
  • Charge = –2
  • Electron = ?

Charge = Proton – Electron

–2 = 8 – Electron

Collect like terms

–2 – 8 = – Electron

– 10 = – Electron

Electron = 10

ii. Determination of the nucleon number

  • Proton = 8
  • Neutron = 8
  • Nucleon number =?

Nucleon number = Proton + Neutron

Nucleon number = 8 + 8

Nucleon number = 16

<h3>How to determine the missing part of particle D</h3>

i. Determination of the number of protons

  • Electron = 10
  • Charge = +3
  • Proton = ?

Charge = Proton – Electron

3 = Proton – 10

Collect like terms

3 + 10 = Proton

Proton = 13

ii. Determination of the number of neutrons

  • Proton = 13
  • Nucleon number = 28
  • Neutron = ?

Nucleon number = Proton + Neutron

28 = 13 + Neutron

Collect like terms

28 – 13 = Neutron

Neutron = 15

Complete question

See attached photo

Learn more about composition of atoms:

brainly.com/question/886387

#SPJ1

7 0
2 years ago
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