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Law Incorporation [45]
3 years ago
7

What is the ph of a buffer prepared by adding 1.00 l of 1.0 m hcℓ to 750 ml of 1.5 m nahcoo? ka = 1.7 x 10-4?

Chemistry
1 answer:
alexandr1967 [171]3 years ago
5 0
Ph = 2.837 ( solution is attached ) 

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exis [7]
kinetic energy is a moving object potential energy is stored energy
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PLEASE HELP WILL GIVE BRAINLIEST!!!
IrinaVladis [17]

Answer:

The light emitted by a light bulb is a form of radiation that occurs when the filament heats up and its thermal emission gains enough energy to move into the visible spectrum.

Explanation:

Light bulbs contain a filament which is heated up electrically. When this filament is heated up,energy in the form of heat is imparted to the electrons in the filament.

This thermal excitation of electrons ultimately leads to emission of light in the viable spectrum. This light is now radiated through a light bulb.

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Explain the volume of ideal gasses as related to the molar concept.
horrorfan [7]

Answer:

n = Initial volume/22.4L

Explanation:

The molar concept is simply one that is used to find the Number of moles and explain the relationship it has with avogadro's number, molecular mass, molar mass e.t.c.

Now, in terms of molar mass, number of moles is given by the formula;

n = mass of the sample/molar mass

In terms of avogadro's number, number of moles is;

1 mole = avogadro's number = 6.02 × 10^(23)

Now, when dealing with ideal gases, the molar volume of an ideal gas is 22.4 L.

Now the relationship between this volume and the mole concept is that the number of moles is gotten by dividing the initial volume by this molar volume.

Thus;

n = Initial volume/22.4L

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3 years ago
Calculate the weight of CO having the same number of oxygen atoms as are present in 22g of CO2.​
Nina [5.8K]

The mass or the weight of the substance is given as the product of moles and molar mass. The weight of CO as the same oxygen atom in carbon dioxide is 28 gm.

<h3>What is mass?</h3>

Mass of the substance has been given by the moles and the molar mass of the substance and also by the Avogadro's number (Na).

It is known that the molar mass of carbon dioxide is 44, and 1 mole of it will contain 44 gm or 6.022 × 10²³ molecules.

In a carbon dioxide molecule oxygen has 2 atoms so,

6.022 x 10²³ molecules of CO₂ = 2 × 6.022 x 10²³ atoms of Oxygen

so, 44g of carbon dioxide = 2 × 6.022 × 10²³ atoms of Oxygen

22 gm of carbon dioxide will also have 6.022 × 10²³ atoms of Oxygen

1 mole of carbon monoxide = 28 gm

So, 28 gm will have 6.022 × 10²³ atoms of Oxygen and will weigh 28 gm.

Therefore, the mass of carbon monoxide is 28 gm.

Learn more about mass here:

brainly.com/question/11172063

#SPJ1

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1 year ago
The experimental percentage of oxygen in Ca(ClO3)2
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Answer:

46.379%

hope this helps :)

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3 years ago
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