50g nitrous oxide combines with 50g oxygen form dinitrogen tetroxide according to the balanced equation below.
2N20 + 302 - 2N204

Answer:

C. 96,657 Pa, 966 millibar, 725 Torr

Explanation:

The pressure of 725 mmHg in Pa, millibars, and Torr is 96,657 Pa, 966 millibar, 725 Torr. Hence option C is correct.

Pressure is defined as the force that is applied perpendicularly to an object's surface in relation to the area that it is dispersed over. Pressure can actually be a very good thing. Stress only occurs and has a fully negative impact when it continues to grow and that sensation of serenity and order is replaced with one of being out of control.

Given pressure = 725 mmHg

1 mmHg = 133.32 Pa

725 mmHg = 133.32 x 725 Pa

                  = 96,657 Pa

1 mmHg = 1.333 millibar

725 mmHg = 725 x 1.333 millibar

                   = 966 millibar

1 mmHg = 1 torr

725 mmHg = 725 Torr

Thus, the pressure of 725 mmHg in Pa, millibars, and Torr is 96,657 Pa, 966 millibar, 725 Torr. Hence option C is correct.

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Answer:

The Atomic Number

Explanation:

Answer: The specific heat of the liquid is [tex]2520J/kg^0C[/tex]

Explanation:

[tex]heat_{absorbed}=heat_{released}[/tex]

As we know that,  

[tex]Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})[/tex]

        .................(1)

where,

q = heat absorbed or released

= mass of glass = x kg

= mass of liquid = x kg

= final temperature =

[tex]T_1[/tex] = temperature of glass = [tex]83^oC[/tex]

[tex]T_2[/tex] = temperature of liquid = [tex]43^oC[/tex]

[tex]c_1[/tex] = specific heat of glass = [tex]840J/kg^0C[/tex]

[tex]c_2[/tex] = specific heat of liquid= ?

Now put all the given values in equation (1), we get

[tex]-[(x\times 840\times (53-83)]=x\times c_2\times (53-43)[/tex]

[tex]c_2=2520J/kg^0C[/tex]

Therefore, the specific heat of the liquid is [tex]2520J/kg^0C[/tex]

The standard reduction potential for the given question is-1.68 V, under the condition that the given half-reaction is  Al(aq) +3e→ Al(s), then the required answer to the given question is Option B.

The standard reduction potential refers to the potential difference comparing the standard hydrogen electrode (SHE) and the half-reaction. The (SHE) possess a standard reduction potential of 0 V at all temperatures.

Hence, the standard reduction potential for the half-reaction Al(aq) + 3e→ Al(s) can be evaluated as follows

E°(Al₃⁺(aq) + 3e⁻ → Al(s)) - E°(H⁺(aq) + e⁻ → 1/2H₂(g))

= -1.66 V - 0 V

= -1.66 V

≈ -1.68 V

A half-reaction can occur for either the oxidation or reduction reaction component of a redox reaction. It projects the change in oxidation states of the substances involved. Half-reactions are applied to describe the processes in an electrochemical cell, in which one metal is oxidized at the anode and another metal is reduced at the cathode.

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Answer:

B

Explanation:

-1.68 V

Explanation:

hope it helps you

Answer:

I hope this helps!Good luck

invertebrate is a animal that does not have a back bone but may have a exoskeleton examples could be earthworm, jellyfish, snail and a spider because it has a exoskeleton a hard outer shell hope this helps

Vertebrates have a back bone like sea turtles , fish ,foxes and humans.

Answer:

2875 s

Explanation:

From the question given above, the following data were obtained:

Power (P) = 80 J/s

Energy (E) = 2.3×10⁵ J

Time (t) = ?

Power can simply be defined as the rate at which energy is used. Mathematically, power is expressed as:

Power = Energy / time

P = E/t

With the above formula, we can obtain the time taken for the bulb to consume 2.3×10⁵ J. This can be obtained as follow:

Power (P) = 80 J/s

Energy (E) = 2.3×10⁵ J

Time (t) = ?

Power = Energy / time

P = E/t

80 = 2.3×10⁵ /t

Cross multiply

80 × t = 2.3×10⁵

Divide both side by 80

t = 2.3×10⁵ / 80

t = 2875 s

Therefore, it will take 2875 s for the bulb to consume 2.3×10⁵ J of energy.

Answer:

C

Explanation:

I think it is C

Answer:

They are both types of energy.

Explanation:

The last 2 are true for light, and the first one is true for sound.

Hope this is right, sorry if it is not.

Answer:

convection

Explanation:

i believe

The popcorn in the pot pops up because of the conduction process when heated. The solid particles transfers heat energy by conduction mode.

There are three mode of heat transfer namely, conduction, convection and radiation. Conduction is taking place in solids whereas, convection is taking place in liquids and gases. Radiation is the way of heat transfer through vacuum.

In conduction, the heat energy transfers from one molecule to the other which are closely packed in the solids as in a chain. Thus, heat easily moves through the chain.

In gases and liquids, the hot molecules moves to the surface to make other molecules hot and this flow of molecules make the entire substance hot.

Popcorn is a solid substance thus, able to conduct heat energy. This heat energy leads them to thermal vibration and they pop up from the hot pot. Therefore, it is an example of conduction.

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Answer : There are 2 atoms of hydrogen element and 2 atoms of oxygen element are in [tex]H_2O_2[/tex] molecule.

Explanation:

Molecule : It is the smallest particle in the chemical compound or chemical element that has the same chemical properties of that compound or element.

Atom : It is the smallest unit of matter.

The given molecule is [tex]H_2O_2[/tex].

In the molecule of [tex]H_2O_2[/tex], there are two elements which are hydrogen and oxygen.

In the molecule of [tex]H_2O_2[/tex], there are 2 atoms of hydrogen element and there are 2 atoms of oxygen element.

Hence, there are 2 atoms of hydrogen element and 2 atoms of oxygen element are in [tex]H_2O_2[/tex] molecule.

Answer:

plants

Explanation:

because it produces ( i am a third grade student and don't know if it is right or not)

The complete question is shown in the image attached to this answer.

Answer:

a) 4

b) 2

c) 5

d) 2

e) 4

f) 3

Explanation:

It is a fact that shorter the wavelength implies greater energy. Among the emission lines, the greatest energy and shortest wavelength is 4.

From the same perspective as above, we can see that the greatest energy catapults the electron from energy level n=1 to n=4. This now corresponds to the shortest wavelength since energy is known to be inversely proportional to wavelength.  

Frequency is inversely related to wavelength when waves  are travelling at the same speed. Thus, a transition corresponding to the highest energy and shortest wavelength in the emission spectrum will have the highest frequency.

The emission line with the lowest energy is found at the line in which the electron moves from n=2 to n=1.

The ionization energy is the energy required to entirely remove the electron from the influence of the nucleus of the hydrogen atom. It corresponds to the transition n=1 to n=∞

Answer:

inspiration means

the process of being mentally stimulated to do or feel something, especially to do something creative.

Answer:

The process of being mentally stimulated to do or feel something, especially to do something creative.

When waves travel from one medium to another, they interact. When waves hit a new medium, they may bend or spread out instead of bouncing back like an echo. These three interactions of waves with matter are known as reflection, refraction, and diffraction.

Interactions include reflection, refraction, and diffraction. An example of wave reflection is an echo. Refraction occurs when waves bend at an angle as they enter a new medium. When waves spread out as they travel through an opening in an obstacle, this is referred to as diffraction.

When two or more waves collide, they interact with one another. Wave interference is the interaction of waves with other waves. When two waves traveling in opposite directions collide, wave interference occurs.

Thus, the interactions of waves with matter are known as reflection, refraction, and diffraction.

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Answer:

Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles

And the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype.

Answer:

because iron is magnetic and sand is not

Explanation:

Answer:

No matter how many times you cut it, its chemical properties won't change and it'll still be paper.

Explanation:

Answer:

Option B. Plutonium-243

Explanation:

To know the the correct answer to the question, we shall write the balanced equation for the reaction showing curium-247 (²⁴⁷Cm) emitting alpha particle. This is illustrated below:

²⁴⁷₉₆Cm —> ᵐₙX + ⁴₂He

Next, we shall determine m, n and X. This can be obtained as follow:

247 = m + 4

Collect like terms

247 – 4 = m

243 = m

Thus, m is 243

96 = n + 2

Collect like terms

96 – 2 = n

94 = n

Thus, n is 94

m = 243

n = 94

ᵐₙX => ²⁴³₉₄X => ²⁴³₉₄Pu

Thus, the equation is:

²⁴⁷₉₆Cm —> ²⁴³₉₄Pu + ⁴₂He

From the illustrations above, the daughter nuclei formed is Plutonium-243 (²⁴³₉₄Pu)

Answer:

Plutonium-243

Explanation:

Answer:

0.0659M

Explanation:

...5,15g  of Fe(NO₃)₃ is dissolved...

Molar concentration is the amount of moles presents in 1L of solution. To solve this question we need to find the moles of iron nitrate, Fe(NO₃)₃ present in the 323mL of solution:

Moles Fe(NO₃)₃ -Molar mass 241.86g/mol-:

5.15g Fe(NO₃)₃ * (1mol / 241.86g) = 0.0213moles Fe(NO₃)₃

And molarity is:

0.0213moles Fe(NO₃)₃ / 0.323L = 0.0659M

Answer:

Mass = 99.2 g

Explanation:

Given data:

Volume of oxygen = 15 L

Mass of oxygen = ?

Pressure of oxygen = 75 psi ( 75/14.696 = 5.10 atm)

Temperature of oxygen = 28°C (28+273 = 301 K)

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

n = PV/RT

n = 5.10 atm× 15 L / 0.0821 atm.L/ mol.K   × 301 K

n = 76.5 atm.L/24.71 atm.L/ mol

n = 3.1 mol

mass of oxygen:

Mass = number of moles × molar mass

Mass = 3.1 mol × 32 g/mol

Mass = 99.2 g

Answer:

A because it is not small enough

Explanation:

It's a of c Yea a or so pick that

In the image shown above, there are 3 elements (option C).

Element is one of the simplest chemical substances that cannot be decomposed in a chemical reaction or by any chemical means and made up of atoms all having the same number of protons.

As stated above, all elements are made up of backbone structures called atoms. The atoms of an element are the same.

According to this question, an image is given showing atoms of different colors. Each atom with the same color belongs to a single element.

Since there are there colors, this means that there are three elements in the picture.

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Answer:

It is made up of two elements.

Explanation:

To answer the question given above,

We shall determine the number of elements present in CaCl₂. This can be obtained as follow:

CaCl₂ contains calcium (Ca) and chlorine gas (Cl₂).

This implies that CaCl₂ contains two different elements.

Now, considering the options given in the question above, CaCl₂ is made up of two elements.

Answer:

- Because it has or not the same number of atoms at each side.

- Because the mass of reactants and product is or not the same after the reaction.

Explanation:

Hello!

In this case, since the law of conservation of mass states that matter cannot be created nor destroyed; when we see a chemical reaction, we need to make sure that the amount of atoms is the same at both reactants and products; for instance the formation of water requires four hydrogen atoms and two oxygen atoms at both reactants and products sides as shown below:

[tex]2H_2+O_2\rightarrow 2H_2O[/tex]

Another way is by proving that the total mass of products equals the total mass of reactants once the reaction has gone to completion.

Best regards!

Answer:

Too high voltage which can't be held by the fuse