How dose critical mass play a role in nuclear reaction?

Answer:Mixture comprises two or three compounds that aren't fused chemically. They have no physical interactions

and A solution contains two substances that are chemically mixed to form a new compound.

Answer: k = 5

Explanation:

k = the number of units that f(x) was moved up to get g(x).

We can see from the graph that f(x) was moved five units up.

So k = 5.

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Answer:

false

Explanation:

Atoms make up everything and are made up of protons, neutrons, and electrons.

Hoped this helped!

Answer:

NaHCO3 = Na2O + H2O + CO2 is a decomposition reaction.

Balanced Equation : 2NaHCO3 → Na2O + H2O + 2CO2

The conversion of 2 - butanol to 2 - nitrobutane​ involves conversion of  2 butanol to 2 - bromobutane and subsequently to 2 - nitrobutane.

In order to convert 2 - butanol to 2 - nitrobutane​, an SN2 reaction is first carried out in which 2 - butanol  is converted to 2 - bromobutane. This reaction proceeds with inversion of configuration at the chiral carbon as expected.

This product is subsequently reacted with silver nitrite in ethanol to yield  2 - nitrobutane​ along side silver bromide. Some alkyl nitrite is also produced as a by product. The components of the mixture are separated by fractional distillation. The scheme of the reaction is shown in the image attached to this answer. This reaction is only applied to primary and secondary alkyl halides.

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Answer:s the temperature is increased, fluoroantimonic acid decomposes and generates hydrogen fluoride gas (hydrofluoric acid). ... 1  Fluoroantimonic acid has a H0 (Hammett acidity function) value of -31.3. Dissolves glass and many other materials and protonates nearly all organic compounds (such as everything in your body)

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The statement "There is space between molecules in a mixture" is true.

A mixture is made up of mixing two or more substances. These mixtures are not mixed chemically, but physically. Both homogeneous and heterogeneous mixtures are possible.

A combination of two or more unrelated substances that is not the result of the chemical fusion is referred to as a mixture. They could be gases, liquids, or solids. The component of a mixture can be easily separated.

A mixture might consist of ingredients in the same phase as one another or in distinct phases. A mixture is homogeneous if the constituent parts are mixed at the same period. A mixture is heterogeneous if it is made up of components that are in different phases.

Thus, the statement is true.

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Answer: Just as the organs in an organ system work together to accomplish their task, so the different organ systems also cooperate to keep the body running. For example, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce.

Explanation:

Answer:

An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. In redox reaction the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

In the reaction : CuO+H  

2

​

⟶Cu+H  2 O  

n the reaction H2

​

  is oxidized since it has lost electrons and Cu is reduced since it has gained electrons.

Explanation:

hope this helps

Answer:

6.5 – 8.5

Explanation:

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Answer:

Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.

Explanation:

Answer:

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Answer:

The are mainly three kinds of subatomic particles in an atom:

1) Electrons (negatively charged particles)

2) Protons (positively charged particles)

3) Neutrons (neutral particles)

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Hope this helped!

Answer:

False

Fossil fuels add carbon dioxide to the atmosphere not oxygen

Answer:

Explanation:

Pick up a soft drink. The CocaCola I have has 8 ingredients and is a mixture. Mind you, it is hard to tell what kind of sugar is present because three are listed.

It certainly has more than 2 ingredients.

Atoms that have the same number of valence electrons (belong to the same group of the periodic table) have similar properties. Hydrogen and Helium are exceptions.  The first shell is filled with 2 electrons which makes Helium a Noble Gas and Hydrogen is a gas thus not a Group 1 metal.

The given atom has 2 valence electrons (a group 2 element).

∴ the atoms with similar properties to that of the given atom would also have 2 valence electrons:

I - filled 1st shell thus noble gas ❌

II - 3 valence electrons ❌

III - 4 valence electrons ❌

IV - 2 valence electrons ✅

Checking my answer:

If we check the periodic table, the atom given is Be (Alkali Earth Metal)

I is He  (Noble Gas)

II is Bo (Group 13)

III is C (Group 14)

IV is Magnesium (Alkali Earth Metal)

Explanation:

[tex]pressure \: \alpha \frac{1}{volume} [/tex]

P1V1 = P2V2

205 (4) = P2 (12)

[tex]P2 = \frac{205 \times 4}{12} [/tex]

P2= 820/12

P2= 68.3 KPa

The pressure in the container after the expanssion of gas, if the temperature remains constant is 68.3 kPa.

According to the Boyle's Law, at constant temperature pressure of any gas is inversely proportional to the volume of the gas, i.e.

P ∝ 1/V

Required equation for the calculation of the pressure is:

P₁V₁ = P₂V₂, where

P₁ = initial pressure = 205 kPa

V₁ = initial volume = 4 L

P₂ = final pressure = ?

V₂ = final volume = 12 L

On putting all these values on the above equation, we get

P₂ = (205)(4) / (12) = 68.3 kPa

Hence resultant pressure is 68.3 kPa.

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Answer:

1 taza = 250 ml eso creo

Explanation: Eso creo jejejejeje.

Answer:

the value of water is

6000

Answer:

600 or 6000 I'm not sure

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The Correct choice is : C

Athlete's foot is one of the common disease caused by a fungus !

Warm front Forms when a moist, warm airmass slides up and over a cold air mass. As the warm airmass rises, it condenses into a broad area of clouds. A warmfront brings gentle rain or light snow, followedby warmer, milder weather.

The rock layer which marks the end of the dinosaurs is: C. KT Boundary layer.

A rock can be defined as a solid material containing minerals, which are naturally formed through the following processes:

Basically, a rock comprises of various layers which marks the age of both living and nonliving organisms, these includes:

I. Burgess Shale layer.

II. Mesozoic Layer.

III. KT Boundary layer.

Dinosaurs refers to a taxa of carnivorous or herbivorous archosaurian reptiles that are often very large and belongs to the Mesozoic era.

Basically, the Mesozoic Layer is a rock layer which marks the period when dinosaurs were still roaming the earth some million years ago.

However, dinosaurs went into extinction at the KT Boundary layer and as such it is a rock layer which marks the end of the dinosaurs.

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Answer:

Ice carving. It's still ice, it's not water, and it changes shape while not changing it's matter

Explanation:

Answer:

cellular respiration

Explanation:

Summary. Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP

Answer:

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Elements in the same group have similar properties because their electron configurations are similar. In particular they have the same number of valence electrons, which are the in the outermost (highest energy) s and p orbitals.

Chlorine reacts in a similar way to bromine as they belong to same group of periodic table.

Reactivity in chemistry is indeed a measurement of how easily a material reacts chemically. The chemical may react alone or in conjunction with neighboring atoms as well as compounds, and in either case, energy will typically be released. The most reactive substances and elements have the potential to spontaneously or explosively ignite.

Since bromine and chlorine electron configurations are similar, elements of the same group exhibit comparable characteristics. The amount of valence electrons, that are located inside this outermost (highest energy) p and s orbitals is particularly similar.

Therefore, chlorine reacts in a similar way to bromine as they belong to same group of periodic table.

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Answer:

papillae

Explanation:

Answer:

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Answer:

Amorphous

Explanation:

Some solids such as glass can be heated and cooled in order to shape them.

These are Amorphous.