How do you prepare a demi-glace?

Answer:

location 3...........

Explanation:

Multiply the given moles times the molar mass of neon, 20.180 g/mol (periodic table).

Answer:

Multiply the supplied moles by 20.180 g/mol, the molar mass of neon (periodic table).

Explanation:

Considering the definition of empirical and molecular formula, the pair of compounds C₄H₁₀ and C₂H₅ has the same empirical formula.

The empirical formula is the simplest expression to represent a chemical compound and indicates the elements that are present and the minimum proportion in whole numbers that there are between their atoms. This formula is also known as the "minimum formula".

On the other side, the molecular formula is the chemical formula that indicates the number and type of different atoms present in the molecule. But unlike the chemical formula, it shows the actual number of atoms that make up a molecule.

In this case, you can observe that if you divide the amount of each element by 2 in compound C₄H₁₀, you get C₂H₅, which is the empirical formula of the compound.

Finally, the pair of compounds C₄H₁₀ and C₂H₅ has the same empirical formula.

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The molecular formula shows the number of atoms present. The molecular formula of the gas is most likely ClO2.

In terms of gas density and molar mass, the ideal gas equation can be written in the form; PM = dRT

Where;

P = pressure of the gas

M = molar mass of the gas

d = density of the gas

R = molar gas constant

T = temperature of the gas

Making the molar mass of the gas the subject of the formula;

M = dRT/P

d = 2.875 g/L

R = 0.082 atmLmol-1K-1

T =  11°C + 273 = 284 K

P = 750.0 mm Hg or 0.99 atm

Substituting values;

M =  2.875 g/L ×  0.082 atmLmol-1K-1 × 284 K/ 0.99 atm

M = 67.6 g/mol

The gas is most likely ClO2.

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Answer:

here is your answer

enjoy

If the number of neutrons in the nucleus of the atom is 41, and the atomic number is 40, the mass number of that atom will be 81

Mass number is the sum of the number of protons which is the atomic number and neutrons of an atom.

It is represented using the letter ‘A.’

Mass number = atomic number + neutrons

We have the atomic number as 40 and the number of neutrons as 41

The mass number = 40 + 41 = 81

Therefore, the mass number of the atom will be 81

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Answer:

They all have the same number of atoms

Explanation:

Which of the following has more atoms?

One mole of zinc

One mole of gold

One mole of silver

One mole of magnesium contians  

O They all have the same number of atomst

a mole of anything contains Avogadros number of 6.022X10^23  things

which has the greatest number of thing? a dozen eggs, a dozen cookies, a dozen pizzas?

a dozen is a number means 12

a mole is a number that that means 6.022 X 10^23 you calculate the molar mass from the chemical formula, but every j mole contains 6.022X10^23

particles.

just like every dozen contains 12

so

They all have the same number of atoms

Answer:

Explanation:

1.c

2.j

3.h

4.b

5.f

6.d

7.a

8.i

9.e

10.g

Answer: how old are you

Explanation:

Cobalt-60 is comprised of 27 protons, 33 neutrons, and 27 electrons. Nuclear reactors are used to artificially create it.

A radioactive isotope containing cobalt with something like a half-life of 5.2713 centuries is called cobalt-60 (60Co). Nuclear reactors are used to artificially create it. Neutron irradiation of bulk material of the monoisotopic as well as mononuclidic cobalt element 59 Co is necessary for deliberate industrial manufacture.

The accidentally generated 60 Co in the latter instance (inside the absence of additional cobalt) is mostly the product of many phases involving neutron activation on iron isotopes inside the reactor. Cobalt-60 is comprised of 27 protons, 33 neutrons, and 27 electrons.

Therefore,  cobalt-60 is comprised of 27 protons, 33 neutrons, and 27 electrons.

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Adhesion is the attraction of molecules of one kind for molecules of a different kind... water is adhesive because the water molecules are attracted to the straw and therefore adhere to it. Thus, adhesive forces are important for sustaining life. This is because of these forces, water can flow up from the roots to the tops of plants to feed the plant, allowing it to move against gravity through plant cells. Another example of why its important that water is adhesive is the movement of water to the tops of trees and the drainage of tears from tear ducts in the corners of your eyes. Or how water droplets stick to the end of the pine needles. These are all examples of adhesion.

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Answer:

It changes from a liquid to a gas. I hope this helps you! :D

Answer:

huhhhhhhhhj

hshshhshshshshshsh

Refer to the attachment

According to the molecular geometry, bonds in carbon tetrachloride are polar and that in nitrogen are non polar.

Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the molecule.It includes parameters like bond length,bond angle and torsional angles.

It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.

They provide information about geometry by taking into considerations the vibrational and rotational absorbance of a substance.Neutron and electron diffraction techniques provide information about the distance between nuclei and electron density.

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Answer:

paper, blood cell, virus, electron, atom

Explanation:

Answer:

ako po because I'm pilipino

Explanation:

HAHAH same too

Answer:

K.E =1/2 Mass×(velocity)2

Explanation:

1/2mass=K.E/Velocity 2

1/2mass=105/(10m/s)2

1/2mass=105/100m/s

1/2mass=21/20m/s

mass=21/20m/s ×2

mass=21/10

mass=2.1 Kilogram (put the value)

The reaction between copper II chloride and sodium sulfide as well as lead II nitrate and potassium sulfate both produce precipitates.

The solubility of a substance in water is in accordance with the solubility rules.  It is possible that a solid product may be formed when two aqueous solutions are mixed together. That solid product is referred to as a precipitate.

Now, we will consider each reaction individually to decode whether or not a precipitate is possible.

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Answer:0.305g

Explanation:

mass = 79.9x(2.3 x 10^21) / (6.02 x 10^23)

= 0.305

Answer: umm, yes? DUH

Explanation: touch some falling out of a tap

Answer:

Water is wet,

Explanation:

in the sense of being a liquid which flows easily, because its viscosity is low, which is because its molecules are rather loosely joined together. So it is wet.

Answer:

Catalysts help in increasing rates of reactions

Answer:

тємρєяαтυяє

Explanation:

Temperature. Usually reactions speed up with increasing temperature.

Answer:

fg

Explanation:

Answer:

Matter can be broken down into two Zalo categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.

Answer:

8

Explanation:

Answer: Using the standardized NaOH solution in the previous question, the titration of 5.00 mL of vinegar required 42.25 mL of NaOH. What is the % of acetic acid in the vinegar? Concentration of NaOH from previous question= 0.0986 M. David C.

Explanation:

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The percentage of acetic acid in vinegar is 4.988 %., When the titration of 5.00 mL of vinegar required 42.25 mL of NaOH.

Titration is defined as the process of chemical analysis method in which the amount of a sample's constituent is determined by mixing a precisely measured amount of the desired constituent with another material in a precise, known proportion. The equivalence point, or the point at which chemically equivalent amounts of the reactants have been combined, is to be detected by the titration.

According to the titration principle, V1=the volume of acetic acid and V1S1=V2S2

S1 is the acetic acid's strength

V1 = 42.25 ml * 0.0986 M / 5 ml = 0.833 M where V2 = Volume of NaOH S2 = Strength of NaOH

Hence, 1000 ml Vinegar contains 0.833 moles of acetic acid per 100 ml of vinegar (0.0833*60). G=4.998 grams of acetic acid

The amount of acetic acid in vinegar is 4.988%.

Thus, the percentage of acetic acid in vinegar is 4.988 %., When the titration of 5.00 mL of vinegar required 42.25 mL of NaOH.

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Answer:

any form of water that falls from the sky