Mother is frying fish in the kitchen. The aroma of fried fish can be smelled by Sofea who is sitting in the living room. Explain how the aroma of the fried fish reach the living room.​

Answers

Answer 1

Answer:

through process of diffusion

Explanation:

air particles and odours move freely in all directions and eventually spreads out thus reaching the sitting room

Answer 2

The process of diffusion causes the particles of the aroma of the fried fish to reach the living room.

What is diffusion?

Diffusion can be described as the net movement of anything such as molcules, or energy from a region of higher concentration to a region of lower concentration. Diffusion is generally driven by a gradient in Gibbs free energy or chemical potential.

The concept of diffusion can be used in fields such as physics, chemistry, biology, sociology, economics, and finance. The central idea of diffusion is common that a substance undergoing diffusion spreads out from a point or location at which there is a higher concentration of that substance.

A gradient can be defined as the change in the value of an amount such as concentration, pressure, or temperature with a change in another variable, distance.

A change in concentration over a distance is known as a concentration gradient, and a change in pressure over a distance is known as a pressure gradient.

The Latin word diffusion means "to spread out." Therefore, the aroma of the fried fish diffuses and reaches to lining room.

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Related Questions

Which statement is true about matter?
a: all matter has volume
b: all matter has mass
c: both A and B.
d: all mater has either volume or mass but not both​

Answers

Answer:

C

Explanation:

This is because matter is anything that has mass and occupies space.Therefore the space occupied by matter is volume

Plz Help I have One more time To retake and I can't fail it..​

Answers

Answer:

A

Explanation:

Hydrogen bonds are intermolecular forces of interaction that exist between molecules of a substance in which hydrogen is bonded to a highly electronegative atom. Hydrogen bonds are strong intermolecular forces and account for high melting and boiling points of small molecules such as water. They stem from dipole-dipole interaction between molecules of a substance.

Metallic bonds are bond forces which exist in a metal. Metal cations are held together by a sea of electrons via electrostatic interaction.

The ionic bond is formed by transfer of electrons from one atom to another leading to the formation of an ion pair held together by electrostatic attraction.

Metallic bonds and hydrogen bonds are much weaker than ionic bonds. Ionic compounds are known to have high melting and boiling points.

Answer in detail?? What precautions would you take to protect yourself from an earthquake, when you are at home and when you are outdoors?

Answers

Answer:

If you're indoors, stay inside. If you're outside, stay outside. If you're indoors, stand against a wall near the center of the building, stand in a doorway, or crawl under heavy furniture (a desk or table). Stay away from windows and outside doors.

Answer

Protect your head and neck with a large book, a pillow, or your arms. The goal is to prevent injuries from falling down or from objects that might fall or be thrown at you.If you are able, seek shelter under a sturdy table or desk. Stay away from outer walls, windows, fireplaces, and hanging objects.If you are unable to move from a bed or chair, protect yourself from falling objects by covering up with blankets and pillows.If you are outside, go to an open area away from trees, telephone poles, and buildings, and stay there.

What is the change in enthalpy of the first reaction below, given the enthalpies of the other two reactions?

Here's the reactions:

There was a formatting issue with the specific chemistry symbols, there all correct in the picture below

2C(s) + O2(g) → 2CO(g)


C(s) + O2(g) → CO2(g) ∆H0= -394 KJ/mol



CO(s) + 1/2 O2(g) → CO2(g) ∆H0= -283 KJ/mol


There was a formatting issue with the specific chemistry symbols, there all correct in the picture below

Answers

Answer:

∆H0 = -222kJ/mol

Explanation:

Using Hess's law, we can find the ΔH of a reaction from the sum of another related reactions as follows:

Using the reactions:

(1) C(s) + O2(g) → CO2(g) ∆H0= -394 KJ/mol

(2) CO(s) + 1/2 O2(g) → CO2(g) ∆H0= -283 KJ/mol

Twice (1):

2C(s) + 2O2(g) → 2CO2(g) ∆H0= 2*-394 KJ/mol = -788kJ/mol

The inverse reaction of (2):

-(2) CO2(g) → CO(g) + 1/2 O2(g) ∆H0= 283 KJ/mol

Twice this reaction:

2*-(2) 2CO2(g) → 2CO(s) + O2(g) ∆H0= 2*283 KJ/mol= 566kJ/mol

Now, the sum of 2*(1) - 2*(2) produce:

2C(s) + 2O2(g) + 2CO2(g)→ 2CO2(g) + 2CO(g) + O2(g) ∆H0= -788kJ/mol +  566kJ/mol

Subtracting the molecules that ar in both sides of the reaction:

2C(s) + O2(g) → 2CO(g) ∆H0 = -222kJ/mol

Some one please Help and Thank you

Answers

Answer:

C is the correct answer

Explanation:

most probably

(07.01 MC)
A potential energy diagram is shown.
70
60
Products
50
40
Potential Energy (kJ)
30
Reactants
20
10
0
Reaction Pathway
What is the activation energy of this reaction? (5 points)

Answers

Answer:

the activation energy is 65-30

35

The activation energy of this reaction is 35 kJ.

What is activation energy?

Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.

The activation energy is equal to the difference between the threshold energy needed for the reaction and the average kinetic energy of all the reacting molecules.

The activation energy of a reaction is the difference in energy between the threshold energy and energy of the reactants.

Given,

The highest energy for a reaction to happen = Threshold energy = 65 kJ

Energy of the reactants = 30 kJ

Therefore, The activation energy of this reaction is 35 kJ.

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The graph shows the change in concentration of one of the species in the reaction
A + B + C→D.

If the graph indicates the reaction rate, then the concentration of which species is plotted?

A

B

C

D

Answers

Answer:

its D

Explanation:

Took the test

The specie whose concentration is plotted is D. The rate of reaction is how quickly or slowly hat a reaction proceeds.

Rate of  reaction

The term rate of reaction refers to how quickly or slowly hat a reaction proceeds. A reaction rate plot involves the concentration of the species plotted against time.

Now we can see from the plot that concentration is increasing with time. Since the concentration of products increases with time, then the specie whose concentration is plotted is D.

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HELP ME ASAPPPP PLZZZZZ!!!!!
For the reaction C + 2H2 → CH4, how many grams of hydrogen are required to produce 16.8 moles of methane, CH4 ?

Answers

The answer is going to be 2.40g

Name the following bases.
Fe(OH)3
- iron(III) hydroxide
- iron(II) hydroxide
- iron hydroxide

Answers

Answer:

1

Explanation:

Ferric Hydroxide

3. 1

Fe. (OH)

Fe(OH)3

Answer:

iron(III) hydroxide

Explanation:

I just took the quiz!

Ethylene glycol (antifreeze) has a density of 1.11 g/cm^3. What is the volume (in m^3) of 9.7 tons?(1 ton = 2.000*10^3lb; 1 kg= 2.2046 lb

Answers

Answer: The volume of 9.7 tons of given ethylene glycol is 0.0079 [tex]m^{3}[/tex].

Explanation:

Given: Density = 1.11 [tex]g/cm^{3}[/tex]

Mass = 9.7 tons

Convert tons into lb as follows.

[tex]1 ton = 2 \times 10^{3} lb\\9.7 ton = 9.7 ton \times 2 \times 10^{3} \frac{lb}{1 ton}\\= 19.4 \times 10^{3} lb[/tex]

Now, lb is converted into kg as follows.

[tex]1 kg = 2.2046 lb\\1 lb = 0.453592 kg\\19.4 \times 10^{3} lb = 19.4 \times 10^{3} lb \times 0.453592 \frac{kg}{1 lb}\\= 8.79 kg[/tex]

1 kg = 1000 g

So, 8.79 kg = 8790 g

Density is the mass of a substance divided by its volume. Hence, volume of ethylene glycol is calculated as follows.

[tex]Density = \frac{mass}{volume}\\1.11 g/cm^{3} = \frac{8790 g}{volume}\\volume = 7918.92 cm^{3} (1 cm^{3} = 10^{-6} m^{3})\\= 0.0079 m^{3}[/tex]

Thus, we can conclude that the volume of 9.7 tons of given ethylene glycol is 0.0079 [tex]m^{3}[/tex].

hii pls help me to balance chemical equations

ammonia + oxygen ------> nitrogen + water​

Answers

Answer:

Explanation:

Ammonia = NH3

Oxygen = O2

When these two (2) chemical elements react together, they form two chemical compound which are nitrogen oxide and water.

NH3 + O2 -----> NO + H2O

We would balance the chemical equation like this;

NH3 + 3O2 -----> 4NO + 2H2O

Drawing a conclusion derived from knowledge of an established principle is called deductive reasoning.
True
False

Answers

Answer:

the answer would be true

Answer:

false

Explanation:

cos the principle is established or known so it will not be a deductive or low reasoning

What makes a strong acid different from a weak acid?

Answers

Answer:

D. A strong acid dissociates more completely than a weak acid.

Explanation:

A P E X

How do the substances compare?

Answers

Matter can be broken down into two 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.
A chemical substance is composed of one type of atom or molecule.
A mixture is composed of different types of atoms or molecules that are not chemically bonded.
A heterogeneous mixture is a mixture of two or more chemical substances where the various components can be visually distinguished.
A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties.
Various separation techniques exist in order to separate matter, including include distillation, filtration, evaporation and chromatography. Matter can be in the same phase or in two different phases for this separation to take place. Matter can be broken down into two 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.
A chemical substance is composed of one type of atom or molecule.
A mixture is composed of different types of atoms or molecules that are not chemically bonded.
A heterogeneous mixture is a mixture of two or more chemical substances where the various components can be visually distinguished.
A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties.
Various separation techniques exist in order to separate matter, including include distillation, filtration, evaporation and chromatography. Matter can be in the same phase or in two different phases for this separation to take place.

Balance the following equations by inserting the proper coefficients.

CH4 +
O2 CO2 +
H2O

CaCl2 +
AgNO3 Ca(NO3)2 +
AgCl

C2H6O +
O2
CO2 +
H2O

Answers

Answer:

2, 2, 2, 2, 3, 2, 3

Explanation:

The coefficient of the equation (i) CH₄ + O₂ → CO₂ + H₂O are 2, 2 the coefficient of equation (ii) CaCl₂ + AgNO₃ → Ca(NO₃)₂ + AgCl are 2, 2  and the coefficient of equation (iii) C₂H₆O + O₂ → CO₂ + H₂O are 3, 2, 3.

What is Balanced Chemical Equation ?

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

Here the given equations are

(i) CH₄ + O₂ → CO₂ + H₂O

(ii) CaCl₂ + AgNO₃ → Ca(NO₃)₂ + AgCl

(iii) C₂H₆O + O₂ → CO₂ + H₂O

Now balance the equation (i)

CH₄ + O₂ → CO₂ + H₂O

Reactant side             Product Side

C = 1                              C = 1

H = 4                             H = 2

O = 2                             O = 3

In the reactant side there are 4 H atoms and in product side there are 2 H atoms are present. So multiply by 2 in the product side to balance the H atoms.

CH₄ + O₂ → CO₂ + 2H₂O

Reactant side             Product Side

C = 1                              C = 1

H = 4                             H = 4

O = 2                             O = 4

In the reactant side there are 2 O atoms and in product side there are 4 H atoms are present. So multiply by 2 in the reactant side to balance the O atoms.

CH₄ + 2O₂ → CO₂ + 2H₂O

Reactant side             Product Side

C = 1                              C = 1

H = 4                             H = 4

O = 4                             O = 4

Here we can see that the equation is balanced. The coefficient are 2, 2.

Now balance the equation (ii)

CaCl₂ + AgNO₃ → Ca(NO₃)₂ + AgCl

Reactant side             Product Side

Ca = 1                             Ca = 1

Cl = 2                              Cl = 1

Ag = 1                              Ag = 1

N = 1                                N = 2

O = 3                               O = 6

In the reactant side there are 2 Cl atoms and in product side there is 1 Cl atom is present. So multiply by 2 in the product side to balance the Cl atoms.

CaCl₂ + AgNO₃ → Ca(NO₃)₂ + 2AgCl

Reactant side             Product Side

Ca = 1                             Ca = 1

Cl = 2                              Cl = 2

Ag = 1                              Ag = 2

N = 1                                N = 2

O = 3                               O = 6

In the reactant side there is 1 Ag atom and in product side there are 2 Ag atoms are present. So multiply by 2 in the reactant side to balance the Ag atoms.

CaCl₂ + 2AgNO₃ → Ca(NO₃)₂ + 2AgCl

Reactant side             Product Side

Ca = 1                             Ca = 1

Cl = 2                              Cl = 2

Ag = 2                             Ag = 2

N = 2                               N = 2

O = 6                               O = 6

Here we can see that the equation is balanced. The coefficient are 2, 2.

Now balance the equation (iii)

C₂H₆O + O₂ → CO₂ + H₂O

Reactant side             Product Side

C = 2                              C = 1

H = 6                              H = 2

O = 3                              O = 3

In the reactant side there are 2 C atoms and in product side there is 1 C atom is present. So multiply by 2 in the product side to balance the C atoms.

C₂H₆O + O₂ → 2CO₂ + H₂O

Reactant side             Product Side

C = 2                              C = 2

H = 6                              H = 2

O = 3                              O = 5

In the reactant side there are 6 H atoms and in product side there are 2 H atoms are present. So multiply by 3 in the product side to balance the H atoms.

C₂H₆O + O₂ → 2CO₂ + 3H₂O

Reactant side             Product Side

C = 2                              C = 2

H = 6                              H = 6

O = 3                              O = 7    

In the reactant side there are 3 O atoms and in product side there are 7 H atoms are present. So multiply by 3 in the reactant side to balance the O atoms.

C₂H₆O + 3O₂ → 2CO₂ + 3H₂O

Reactant side             Product Side

C = 2                              C = 2

H = 6                              H = 6

O = 7                              O = 7        

Here we can see that the equation is balanced. The coefficient are 3, 2, 3.

Thus, we can say that the coefficient of the equation (i) CH₄ + O₂ → CO₂ + H₂O are 2, 2 the coefficient of (ii) CaCl₂ + AgNO₃ → Ca(NO₃)₂ + AgCl are 2, 2  and the coefficient of equation (iii) C₂H₆O + O₂ → CO₂ + H₂O are 3, 2, 3.

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The characteristics of a certain gas are listed in the table.

What is the expected density of the above sample of gas?
A - 3.16 g/L
B - 1.58 g/L
C - 1.21 g/L
D - 1.03 g/L

Answers

Answer:

Option A. 3.16 g/L

Explanation:

We'll begin by calculating the molar mass of Cl₂. This can be obtained as follow:

Molar mass of Cl₂ = 2 × 35.45

= 70.9 g/mol

Finally, we shall determine the density of Cl₂. This can be obtained as follow:

Molar mass of of Cl₂ (M) = 70.9 g/mol

Pressure (P) = stp = 1 atm

Temperature (T) = stp = 273 K

Gas constant (R) = 0.0821 atm.L/Kmol

Density (D) =?

D = PM / RT

D = (1 × 70.9) / (0.0821 × 273)

D = 70.9 / 22.4133

D = 3.16 g/L

Thus, the density of the gas is 3.16 g/L.

A sample taken from a layer of mica In a canyon has 2.10 grams of potassium-40. A test reveals it to be 2.6 billion years old. How much potassium-40 was in the sample originally if the half-life of potassium-40 is 1.3 billion years? A. 4.20 g B. 8.40 g C. 12.6 g D. 16.8 g the E. 25.2 g ​

Answers

[tex]\huge\bold\pink{hello!!!}[/tex]

HERE IS UR ANSWER

_____________________

option b) is correct answer.

A galaxy that has an undefined shape is best classified as a(n)
galaxy.

Answers

Answer:

irregular galaxy

pls give brainliest :)

Answer:

irregular galaxy

it is undefined shape

how to prepare hydrogen gas​

Answers

1. Natural Gas Reforming/Gasification: Synthesis gas, a mixture of hydrogen, carbon monoxide, and a small amount of carbon dioxide, is created by reacting natural gas with high-temperature steam. ...

2. Electrolysis: An electric current splits water into hydrogen and oxygen.

Hope this helps :))

Seeds are organs within the reproductive system of plants. How is the spreading of seeds important to the survival of an organism?
A. An organism must reproduce in order to find a suitable place to live.
B. Although a single organism can survive without reproducing, organisms must reproduce in order to ensure the survival of the species.
C. Although a single organism can survive without reproducing, the organism must spread its seeds in order to protect itself from disease.
D. An organism must reproduce in order to absorb nutrients from the environment. SUBMIT​

Answers

Answer:

Although a single organism can survive without reproducing, organisms must reproduce in order to ensure the survival of the species.

What effect does the electrostatic force have?
- Particles without charge repel each other.
- Particles of different masses repel each other.
- Particles of opposite charge repel each other.
- Particles of the same charge repel each other. (ANSWER)

Answers

D

Explanation:

Particles of the same charge repel each other

Question:
Nearly the entire world uses the metric system for their measurements. The US is one in of three countries that does not use metric. Would you support changing school curriculum to teach the metric system as the primary measurement system in the US? Why or why not.
(It must be 3-5 sentences long please)

Answers

Answer:

I would

Explanation:

I would support the change to the metric system only because it allows children to understand smaller forms of units and measurements. Also, it will allow people in the math and science fields to broaden their knowledge of equations and formulas. Meaning that the scientist and mathematicians will be able to solve more problems in the world right now.  Overall, the education system for the children of the United States would benefit from the change in the measurement system.

why is it important of having regular supervision of the market?

Answers

Supervision of weights and measures promotes accurate measurements of goods and services to ensure that everybody gets a fair trade in the marketplace. Not so coincidentally it also is a deterrent to ensure that traders are being honest in their trade practises.

Find the number of moles of sodium hydroxide in 25cm3 solution of concentration 0,1 mol/dm3​

Answers

Answer:

0.0025  moles

Explanation:

25cm^3 = 25/1000 dm^3

Conc = mol/dm^3

Mol = conc * dm^3

Mol = 0.1 * 25/1000

If the velocity of a body is decreased to 1/2, then K.E. of the body decreases to​

Answers

Answer:

1/4th

Explanation:

KE = .5mv^2

So when we decrease the velocity by half, we end up losing three fourths of net energy due to that value being squared.

Answer:

The Kinetic Energy is reduced to 1/4 of the original K. E.

Explanation:

K. E. = 1/2 m v^2

If v becomes v/2 we have:

K E. = 1/2 m (v/2)^2

= 1/2 m v^2/4

So dividing the 2:

we get  1/2 m v^2/4 /  1/2 m v^2

= v^2/4 / v^2

= v^2 / 4v^2

= 1/4.

why water molecules remain associated in liquid water

Answers

Answer:

Answer: They are attracted to each other due to their electrostatic attraction. All that means is the hydrogen atom is positively charged, while the oxygen atom is negatively charged. ... The hydrogen of one water molecule will bond to the oxygen atom of another molecule.

Answer:

They are attracted to each other due to their electrostatic attraction. All that means is the hydrogen atom is positively charged, while the oxygen atom is negatively charged. ... The hydrogen of one water molecule will bond to the oxygen atom of another molecule.

Explanation:

molecular formula of ammonium nitrite using cris method

Answers

Answer:

By using the criss cross method,the -1 charge of nitrate ion is shifted to ammonium ion and +1 charge of ammonium ion is shifted to nitrate ion. In this way, the final formula NH4NO3 is formed for the ammonium nitrate.


Catalysts help reactions happen more easily. This graph shows the energy of
a reaction without a catalyst. Which graph shows the energy of the same
reaction with a catalyst?

Answers

Answer:

D.

Explanation:

Catalysts are substances that increase the rate of a reaction i.e. make it faster. Catalysts do this by reducing the activation energy needed for a reaction to occur.

According to the image in this question, a graph showing the energy of a reaction without a catalyst is displayed. This means that a longer time will be spent. However, with a catalyst, the activation energy will reduce as seen in the image in option D.

How does peer review affect research?
A. Experimental results will be trusted by the scientific community
only if they have been peer-reviewed.
B. Experimental results will be published only before they have been
peer-reviewed.
C. An experiment will not be repeated by others if it has been peer-
reviewed.
O D. Experimental results are possible only if they have been peer-
reviewed.

Answers

Answer:

A: Experimental results will be trusted by the scientific community

only if they have been peer-reviewed.

Explanation:

It is NOT C as I have tried it, it did not work and makes no sense.

Plz Help I have One more time To retake and I can't fail it..​

Answers

[tex]option(a)[/tex]

Explanation:

You answer is correct as you move from left to right across a period. But, the question is asked regarding to the right to left across a period. So, as you move from right to left across a period, you can find firstly Non-metals, secondly Metalloids, and lastly Metals.

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