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ANSWER:

We can convert methanol into ethanol by an organic coupling reaction which is called Wurtz reaction. This is carried out with sodium metal in the presence of dry ether and forms higher alkanes.

Answer:

Ethylenediaminetetraacetic acid (EDTA), heparin, and citrate are the most commonly used anticoagulants (39–41). pls mark me branilest

Answer:

Fine chemicals are used as starting materials for specialty chemicals, particularly pharmaceuticals, biopharmaceuticals and agrochemicals. ... The term "fine chemicals" is used in distinction to "heavy chemicals", which are produced and handled in large lots and are often in a crude state.

Explanation:

Answer:

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The correct answer is: Avogadro

The Avogadro constant (NA or L) is the proportionality factor that relates the number of constituent particles (usually molecules, atoms or ions) in a sample with the amount of substance in that sample. Its SI unit is the reciprocal mole, and it is defined as NA = 6.02214076×1023 mol−1.

The answer is Avogadro.

Explanation:

Here are the examples :

The mass of a single carbon-12 atom has been found to be 1.992×10^-23 g using a mass spectrometer. The number of atoms in exactly one mole of 12C is 6.02×10^23. This can be shown by the following calculation.

Na = Mass per mole of 12C ÷ Mass of one atom of 12C

= 12g/mol ÷ 1.992×10^-23

= 6.02 × 10^23 mol^-1

Thus one mole of any substance contains 6.02×10^23 particles. This number is called the Avogadro constant.

So that 12g of the element carbon , 1 g of the element hydrogen and 32g of the element sulphur contains 6.02×10^23 atoms even though the element carbon exist as atoms, and Hydrogen and sulphur exist as molecules.

I hope it can help you

Answer:

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Answer:

Chemical elements are categorized in the Periodic Table based on the number of protons and electrons. The electrons are the sub-atomic particle, which revolves around the atomic nucleus and has a negative charge. The protons are the positive charged sub-atomic particles, which are present in the nucleus of the atom.

Explanation:

The chemical element is a pure particle, which is made up of atoms. The atoms in a neutral chemical element have the same number of electrons and protons. In the case given above, calcium has fewer protons and electrons than rubidium. Calcium has the atomic number 20, such that it belongs to group 2 and period 4. The number of electrons and protons in calcium (no net charge) is 20. Similarly, the rubidium belongs to group 1 and period 5. The element has the atomic number 37, such that the number of electrons and protons in rubidium is 37.

Answer:

because mixed particles are invisible in this mixture.

Answer:

The dependant variable

Explanation:

The dependent variable is the factor that is being tested and measured in an experiment.

Answer:

Melting poing is the temperature at which a solid changes to liquid under atmospheric pressure. Freezing point is the temperature at which liquid changes to solid under atmospheric pressure.

Elements are substances that are made from one type of atom. An element cannot be broken down into any other substance. ... Compounds are substances made from atoms of different elements joined by chemical bonds. They can only be separated by a chemical reaction.

Compounds are formed because of chemical bonding between two elements. Mixtures are formed when substances are physically mixed with one another. Compounds are basically of three kinds : Ionic, metallic and covalent

Answer: 3

Explanation: You may not always get feedback that would be helpful and requesting the answer would be cheating

Quantatative is when a number of something changes, and we could sometimes visualize it, but qualitative is different.

Hope this helps

kenny

:D

Answer: angular

Explanation:

Angular and is found in hydrogen...from sighwell assumption saying that is they is three pairs of electrons in the valence shell of the central atom the orbital will oriente at an angle of 120° to form a bond of trigonal planar or angular.

Answer:

1) ball and stick is right just did this on my test.

2) linear

Explanation:

Answer:

C

Explanation:

To find the new pressure, we will use this formula: P₁V₁/T₁ = P₂V₂/T₂

P₁ = Original pressure (755.2)

V₁ = Original volume (188.5)

T₁ = Original temperature in kelvins (26.7 + 273.15 = 299.85)

P₂ = Final Volume (?)

V₂ = Final volume (210.5)

T₂ = Final temperature in kelvins (165.2 + 273.15 = 438.35)

Here is our equation

(755.2)(188.5)/(299.85) = (210.5)P₂/(438.35)

Hopefully, you have a calculator handy because this equation will end up looking like this:

474.75471 = (0.48021)P₂

Divide both sides by the coefficient

474.75471/0.48021 = (0.48021)P₂/0.48021

P₂ = 988.64

Answer:

13.7 cm

Explanation:

If the number is between two whole numbers then that means it is going to be a decimal, how to determine the decimal is by how many ticks/lines are between it, so if you count from 13 cm and count each line as 1 you get to the number 7 and since that number is between the whole number it becomes 13.7

Answer:

A

Explanation:

Explanation:

protons have a relative charge of +1, they are located in the nucleus and the carry a positive charge

the electrons are negatively charged and have a charge of -1 . They are found orbiting on the shells .the electrons have a negligible mass of 1 / 1840

the neutrons have no charge they are located in the nucleus of an atom .

Answer:

oxidation- reduction

Explanation:

where gaining electronic reduces one element and losing them oxidize the other nitric acid is not only strong it is also a oxidizing agent

When copper is changed to copper(II) nitrate by the nitric acid, it is an example of an oxidation-reduction.

Molecule is defined as number of atoms combined together, that shows the most smaller chemical compound's fundamental unit that participate in chemical reaction. In the combination of atoms attractive forces play a vital role and it helps to bound the atoms by a chemical bond.

Liquid consist of small range of order and the reason behind this is intermolecular attractive force which is very strong and due to this reason molecules are packed together tightly. Due to presence of high kinetic energy the molecules present in the liquid move rapidly and fastly  with one another.

Water is considered to be the simpler molecule and it consist of hydrogen and oxygen atom bounded together and due to the reason of high electronegativity of the oxygen's atom the bonds present are polar as well as covalent.  Due to presence of high kinetic energy the molecules present in the liquid move rapidly and fastly  with one another.

Therefore, When copper is changed to copper(II) nitrate by the nitric acid, it is an example of an oxidation-reduction.

Learn more about chemical and physical property here:

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Answer:nb mhvj

Explanation:

hvvmjhv

Answer:

1.9

Then

-75.4 C

Explanation:

In tHe PiCtuRe

Answer:

930 pls mark me branilest

Answer:

11.0117647

Explanation:

Answer:

b

Explanation:

there is 1000m in 1 km so the ans is literally just 145x1000 m which is 145000m

Answer:

B! 145,000

Explanation:

your welcome love!

Answer:

combustion of car engines producing pollutants in the air

Answer: c is carbon h is hydrogen with the 2 means 2 hydrogen and o is oxygen

In conclusion alphabets represent elements and numbers represent how many elements

After rounding off to three significant figures :

Answer:MgBr2

Explanation:

Answer:

11. A

12. B

13. D

14. E

15. C